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1);transform:matrix3d(0.99237, 0, 0, 0, 0, 1.00413, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1)}45.833333%{-webkit-transform:matrix3d(0.99202, 0, 0, 0, 0, 1.00651, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);transform:matrix3d(0.99202, 0, 0, 0, 0, 1.00651, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1)}47.916667%{-webkit-transform:matrix3d(0.99241, 0, 0, 0, 0, 1.00726, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);transform:matrix3d(0.99241, 0, 0, 0, 0, 1.00726, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1)}50%{-webkit-transform:matrix3d(0.99329, 0, 0, 0, 0, 1.00671, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);transform:matrix3d(0.99329, 0, 0, 0, 0, 1.00671, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1)}52.083333%{-webkit-transform:matrix3d(0.99447, 0, 0, 0, 0, 1.00529, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);transform:matrix3d(0.99447, 0, 0, 0, 0, 1.00529, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1)}54.166667%{-webkit-transform:matrix3d(0.99577, 0, 0, 0, 0, 1.00346, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);transform:matrix3d(0.99577, 0, 0, 0, 0, 1.00346, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1)}56.25%{-webkit-transform:matrix3d(0.99705, 0, 0, 0, 0, 1.0016, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);transform:matrix3d(0.99705, 0, 0, 0, 0, 1.0016, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1)}58.333333%{-webkit-transform:matrix3d(0.99822, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);transform:matrix3d(0.99822, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1)}60.416667%{-webkit-transform:matrix3d(0.99921, 0, 0, 0, 0, 0.99884, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);transform:matrix3d(0.99921, 0, 0, 0, 0, 0.99884, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1)}62.5%{-webkit-transform:matrix3d(1, 0, 0, 0, 0, 0.99816, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);transform:matrix3d(1, 0, 0, 0, 0, 0.99816, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1)}64.583333%{-webkit-transform:matrix3d(1.00057, 0, 0, 0, 0, 0.99795, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);transform:matrix3d(1.00057, 0, 0, 0, 0, 0.99795, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1)}66.666667%{-webkit-transform:matrix3d(1.00095, 0, 0, 0, 0, 0.99811, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);transform:matrix3d(1.00095, 0, 0, 0, 0, 0.99811, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1)}68.75%{-webkit-transform:matrix3d(1.00114, 0, 0, 0, 0, 0.99851, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);transform:matrix3d(1.00114, 0, 0, 0, 0, 0.99851, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1)}70.833333%{-webkit-transform:matrix3d(1.00119, 0, 0, 0, 0, 0.99903, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);transform:matrix3d(1.00119, 0, 0, 0, 0, 0.99903, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1)}72.916667%{-webkit-transform:matrix3d(1.00114, 0, 0, 0, 0, 0.99955, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);transform:matrix3d(1.00114, 0, 0, 0, 0, 0.99955, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1)}75%{-webkit-transform:matrix3d(1.001, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);transform:matrix3d(1.001, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1)}77.083333%{-webkit-transform:matrix3d(1.00083, 0, 0, 0, 0, 1.00033, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);transform:matrix3d(1.00083, 0, 0, 0, 0, 1.00033, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1)}79.166667%{-webkit-transform:matrix3d(1.00063, 0, 0, 0, 0, 1.00052, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);transform:matrix3d(1.00063, 0, 0, 0, 0, 1.00052, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1)}81.25%{-webkit-transform:matrix3d(1.00044, 0, 0, 0, 0, 1.00058, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);transform:matrix3d(1.00044, 0, 0, 0, 0, 1.00058, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1)}83.333333%{-webkit-transform:matrix3d(1.00027, 0, 0, 0, 0, 1.00053, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);transform:matrix3d(1.00027, 0, 0, 0, 0, 1.00053, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1)}85.416667%{-webkit-transform:matrix3d(1.00012, 0, 0, 0, 0, 1.00042, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);transform:matrix3d(1.00012, 0, 0, 0, 0, 1.00042, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1)}87.5%{-webkit-transform:matrix3d(1, 0, 0, 0, 0, 1.00027, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);transform:matrix3d(1, 0, 0, 0, 0, 1.00027, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1)}89.583333%{-webkit-transform:matrix3d(0.99991, 0, 0, 0, 0, 1.00013, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);transform:matrix3d(0.99991, 0, 0, 0, 0, 1.00013, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1)}91.666667%{-webkit-transform:matrix3d(0.99986, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);transform:matrix3d(0.99986, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1)}93.75%{-webkit-transform:matrix3d(0.99983, 0, 0, 0, 0, 0.99991, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);transform:matrix3d(0.99983, 0, 0, 0, 0, 0.99991, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1)}95.833333%{-webkit-transform:matrix3d(0.99982, 0, 0, 0, 0, 0.99985, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);transform:matrix3d(0.99982, 0, 0, 0, 0, 0.99985, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1)}97.916667%{-webkit-transform:matrix3d(0.99983, 0, 0, 0, 0, 0.99984, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);transform:matrix3d(0.99983, 0, 0, 0, 0, 0.99984, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1)}100%{-webkit-transform:matrix3d(1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);transform:matrix3d(1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1)}}</style><meta content="Sharpen your PHP skills with fun, bite-sized exercises. Earn XP, unlock achievements and level up. Turn learning to code into a daily habit." dochead="1" name="description"/><link dochead="1" href="/_cdn/s3.amazonaws.com/edabit-images/logo_main_medium.png" rel="icon" type="image/png"/><meta charset="utf-8" dochead="1"/><meta content="coding challenges, programming challenges" dochead="1" name="keywords"/><meta content="summary_large_image" dochead="1" name="twitter:card"/><meta content="@praxide" dochead="1" name="twitter:site"/><meta content="Learn to code with fun, bite-sized challenges. Earn XP, unlock achievements and level up. It's like Duolingo for learning to code." dochead="1" property="og:description"/><meta content="/_cdn/s3.amazonaws.com/edabit-images/logo_wide_large.png" dochead="1" property="og:image"/><meta content="praxide" dochead="1" property="og:site_name"/><meta content="Learn to Code with 10,000+ Interactive Challenges" dochead="1" property="og:title"/><meta content="website" dochead="1" property="og:type"/><style data-captured-cssinjs="true">.s-alert-box, .s-alert-box * { box-sizing: border-box; }
.s-alert-box { position: fixed; background: rgba(42, 45, 50, 0.85); padding: 22px; line-height: 1.4; z-index: 1000; pointer-events: none; color: rgba(250, 251, 255, 0.95); font-size: 100%; font-family: "Helvetica Neue", "Segoe UI", Helvetica, Arial, sans-serif; transition: top 0.4s, bottom 0.4s; }
.s-alert-box.s-alert-show { pointer-events: auto; }
.s-alert-box a { color: inherit; opacity: 0.7; font-weight: 700; }
.s-alert-box a:hover, .s-alert-box a:focus { opacity: 1; }
.s-alert-box p { margin: 0px; }
.s-alert-box.s-alert-show, .s-alert-box.s-alert-visible { pointer-events: auto; }
.s-alert-bottom-left { inset: auto auto 30px 30px; }
.s-alert-top-left { inset: 30px auto auto 30px; }
.s-alert-top-right { inset: 30px 30px auto auto; }
.s-alert-bottom-right { inset: auto 30px 30px auto; }
.s-alert-bottom { width: 100%; max-width: 100%; inset: auto 0px 0px; }
.s-alert-top { width: 100%; max-width: 100%; inset: 0px 0px auto; }
.s-alert-info { background: rgb(41, 135, 205); color: rgb(255, 255, 255); }
.s-alert-success { background: rgb(45, 184, 75); color: rgb(255, 255, 255); }
.s-alert-warning { background: rgb(250, 188, 46); color: rgb(255, 255, 255); }
.s-alert-error { background: rgb(219, 40, 40); color: rgb(255, 255, 255); }
[class^="s-alert-effect-"].s-alert-hide, [class*=" s-alert-effect-"].s-alert-hide { animation-direction: reverse; }
.s-alert-box-height { visibility: hidden; position: fixed; }.s-alert-effect-jelly a { color: rgb(255, 255, 255); }
.s-alert-effect-jelly a:hover, .s-alert-effect-jelly a:focus { color: rgb(255, 255, 255); }
.s-alert-effect-jelly .s-alert-close::before, .s-alert-effect-jelly .s-alert-close::after { background: rgb(255, 255, 255); }
.s-alert-effect-jelly .s-alert-close:hover::before, .s-alert-effect-jelly .s-alert-close:hover::after { background: rgb(255, 255, 255); }
.s-alert-effect-jelly.s-alert-show { animation-name: animJelly; animation-duration: 1s; animation-timing-function: linear; }
.s-alert-effect-jelly.s-alert-hide { animation-name: animFade; animation-duration: 0.3s; }
@-webkit-keyframes animFade {
0% { opacity: 0; }
100% { opacity: 1; }
}
@keyframes animFade {
0% { opacity: 0; }
100% { opacity: 1; }
}
@-webkit-keyframes animJelly {
0% { transform: matrix3d(0.7, 0, 0, 0, 0, 0.7, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
2.08333% { transform: matrix3d(0.75266, 0, 0, 0, 0, 0.76342, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
4.16667% { transform: matrix3d(0.81071, 0, 0, 0, 0, 0.84545, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
6.25% { transform: matrix3d(0.86808, 0, 0, 0, 0, 0.9286, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
8.33333% { transform: matrix3d(0.92038, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
10.4167% { transform: matrix3d(0.96482, 0, 0, 0, 0, 1.05202, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
12.5% { transform: matrix3d(1, 0, 0, 0, 0, 1.08204, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
14.5833% { transform: matrix3d(1.02563, 0, 0, 0, 0, 1.09149, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
16.6667% { transform: matrix3d(1.04227, 0, 0, 0, 0, 1.08453, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
18.75% { transform: matrix3d(1.05102, 0, 0, 0, 0, 1.06666, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
20.8333% { transform: matrix3d(1.05334, 0, 0, 0, 0, 1.04355, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
22.9167% { transform: matrix3d(1.05078, 0, 0, 0, 0, 1.02012, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
25% { transform: matrix3d(1.04487, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
27.0833% { transform: matrix3d(1.03699, 0, 0, 0, 0, 0.98534, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
29.1667% { transform: matrix3d(1.02831, 0, 0, 0, 0, 0.97688, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
31.25% { transform: matrix3d(1.01973, 0, 0, 0, 0, 0.97422, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
33.3333% { transform: matrix3d(1.01191, 0, 0, 0, 0, 0.97618, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
35.4167% { transform: matrix3d(1.00526, 0, 0, 0, 0, 0.98122, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
37.5% { transform: matrix3d(1, 0, 0, 0, 0, 0.98773, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
39.5833% { transform: matrix3d(0.99617, 0, 0, 0, 0, 0.99433, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
41.6667% { transform: matrix3d(0.99368, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
43.75% { transform: matrix3d(0.99237, 0, 0, 0, 0, 1.00413, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
45.8333% { transform: matrix3d(0.99202, 0, 0, 0, 0, 1.00651, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
47.9167% { transform: matrix3d(0.99241, 0, 0, 0, 0, 1.00726, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
50% { transform: matrix3d(0.99329, 0, 0, 0, 0, 1.00671, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
52.0833% { transform: matrix3d(0.99447, 0, 0, 0, 0, 1.00529, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
54.1667% { transform: matrix3d(0.99577, 0, 0, 0, 0, 1.00346, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
56.25% { transform: matrix3d(0.99705, 0, 0, 0, 0, 1.0016, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
58.3333% { transform: matrix3d(0.99822, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
60.4167% { transform: matrix3d(0.99921, 0, 0, 0, 0, 0.99884, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
62.5% { transform: matrix3d(1, 0, 0, 0, 0, 0.99816, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
64.5833% { transform: matrix3d(1.00057, 0, 0, 0, 0, 0.99795, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
66.6667% { transform: matrix3d(1.00095, 0, 0, 0, 0, 0.99811, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
68.75% { transform: matrix3d(1.00114, 0, 0, 0, 0, 0.99851, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
70.8333% { transform: matrix3d(1.00119, 0, 0, 0, 0, 0.99903, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
72.9167% { transform: matrix3d(1.00114, 0, 0, 0, 0, 0.99955, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
75% { transform: matrix3d(1.001, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
77.0833% { transform: matrix3d(1.00083, 0, 0, 0, 0, 1.00033, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
79.1667% { transform: matrix3d(1.00063, 0, 0, 0, 0, 1.00052, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
81.25% { transform: matrix3d(1.00044, 0, 0, 0, 0, 1.00058, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
83.3333% { transform: matrix3d(1.00027, 0, 0, 0, 0, 1.00053, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
85.4167% { transform: matrix3d(1.00012, 0, 0, 0, 0, 1.00042, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
87.5% { transform: matrix3d(1, 0, 0, 0, 0, 1.00027, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
89.5833% { transform: matrix3d(0.99991, 0, 0, 0, 0, 1.00013, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
91.6667% { transform: matrix3d(0.99986, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
93.75% { transform: matrix3d(0.99983, 0, 0, 0, 0, 0.99991, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
95.8333% { transform: matrix3d(0.99982, 0, 0, 0, 0, 0.99985, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
97.9167% { transform: matrix3d(0.99983, 0, 0, 0, 0, 0.99984, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
100% { transform: matrix3d(1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
}
@keyframes animJelly {
0% { transform: matrix3d(0.7, 0, 0, 0, 0, 0.7, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
2.08333% { transform: matrix3d(0.75266, 0, 0, 0, 0, 0.76342, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
4.16667% { transform: matrix3d(0.81071, 0, 0, 0, 0, 0.84545, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
6.25% { transform: matrix3d(0.86808, 0, 0, 0, 0, 0.9286, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
8.33333% { transform: matrix3d(0.92038, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
10.4167% { transform: matrix3d(0.96482, 0, 0, 0, 0, 1.05202, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
12.5% { transform: matrix3d(1, 0, 0, 0, 0, 1.08204, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
14.5833% { transform: matrix3d(1.02563, 0, 0, 0, 0, 1.09149, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
16.6667% { transform: matrix3d(1.04227, 0, 0, 0, 0, 1.08453, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
18.75% { transform: matrix3d(1.05102, 0, 0, 0, 0, 1.06666, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
20.8333% { transform: matrix3d(1.05334, 0, 0, 0, 0, 1.04355, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
22.9167% { transform: matrix3d(1.05078, 0, 0, 0, 0, 1.02012, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
25% { transform: matrix3d(1.04487, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1); }
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In the Code tab above you'll find a starter function that looks like this: function returnTrue() { } All you need to do is type return true; between the curly braces { } and then click the Check button. Get it right and the button turns red, flashing SUB …</div><div class="tags"><div class="ui small label">language_fundamentals</div><div class="ui small label">strings</div><div class="ui small label">validation</div></div><div style="color: rgb(45, 184, 75); float: right; font-size: 12px; padding-right: 10px; padding-top: 11px;">Very Easy</div></a></div><div class="item no-highlight" role="listitem"><div class="right floated content"><div aria-expanded="false" class="ui simple top right pointing dropdown" role="listbox" style="margin-bottom: 30px; margin-top: 0px; padding-bottom: 3px;" tabindex="0"><div aria-live="polite" class="text" role="alert"></div><i aria-hidden="true" class="ellipsis horizontal large link icon"></i><div class="menu transition" style="margin-right: -4px; margin-top: 0px; min-width: 115px;"><div aria-disabled="true" class="disabled item" role="option">Add to bookmarks</div><div aria-disabled="true" class="disabled item" role="option">Add to collection</div></div></div></div><a class="content" href="/challenge/F49nF24spzt4H2KuZ"><h3 class="header">Sum Two Numbers and Return It</h3><div class="description" style="font-size: 1.05rem; min-height: 45px;">Write a function that accepts two numbers as arguments and hands back their total. Examples addition(3, 2) ➞ 5 addition(-3, -6) ➞ -9 addition(7, 3) ➞ 10 Notes Remember to return your answer. Stuck on a challenge? Find hints in the Resources tab. Really stuck? Reveal the answer in the Solutions tab.</div><div class="tags"><div class="ui small label">algebra</div><div class="ui small label">language_fundamentals</div><div class="ui small label">math</div><div class="ui small label">numbers</div></div><div style="color: rgb(45, 184, 75); float: right; font-size: 12px; padding-right: 10px; padding-top: 11px;">Very Easy</div></a></div><div class="item no-highlight" role="listitem"><div class="right floated content"><div aria-expanded="false" class="ui simple top right pointing dropdown" role="listbox" style="margin-bottom: 30px; margin-top: 0px; padding-bottom: 3px;" tabindex="0"><div aria-live="polite" class="text" role="alert"></div><i aria-hidden="true" class="ellipsis horizontal large link icon"></i><div class="menu transition" style="margin-right: -4px; margin-top: 0px; min-width: 115px;"><div aria-disabled="true" class="disabled item" role="option">Add to bookmarks</div><div aria-disabled="true" class="disabled item" role="option">Add to collection</div></div></div></div><a class="content" href="/challenge/54fNDDddnW5WcwS8n"><h3 class="header">Return the Number That Comes After the Integer</h3><div class="description" style="font-size: 1.05rem; min-height: 45px;">Write a function that accepts a number as an argument, bumps that number up by +1 and returns the outcome. Examples addition(0) ➞ 1 addition(9) ➞ 10 addition(-3) ➞ -2 Notes Remember to return your answer. Stuck on a challenge? Find hints in the Resources tab. Really stuck? Unlock the answer in the So …</div><div class="tags"><div class="ui small label">algebra</div><div class="ui small label">math</div><div class="ui small label">numbers</div></div><div style="color: rgb(45, 184, 75); float: right; font-size: 12px; padding-right: 10px; padding-top: 11px;">Very Easy</div></a></div><div class="item no-highlight" role="listitem"><div class="right floated content"><div aria-expanded="false" class="ui simple top right pointing dropdown" role="listbox" style="margin-bottom: 30px; margin-top: 0px; padding-bottom: 3px;" tabindex="0"><div aria-live="polite" class="text" role="alert"></div><i aria-hidden="true" class="ellipsis horizontal large link icon"></i><div class="menu transition" style="margin-right: -4px; margin-top: 0px; min-width: 115px;"><div aria-disabled="true" class="disabled item" role="option">Add to bookmarks</div><div aria-disabled="true" class="disabled item" role="option">Add to collection</div></div></div></div><a class="content" href="/challenge/zqJkZGJkT8MNPNQGW"><h3 class="header">Transform Minutes Into Seconds</h3><div class="description" style="font-size: 1.05rem; min-height: 45px;">Build a function that accepts an integer minutes and turns it into the equivalent number of seconds. Examples convert(5) ➞ 300 convert(3) ➞ 180 convert(2) ➞ 120 Notes Remember to return your result. If a challenge stumps you, look for hints in the Resources tab. When you're truly stuck, reveal answers in the Solutions tab.</div><div class="tags"><div class="ui small label">language_fundamentals</div><div class="ui small label">math</div><div class="ui small label">numbers</div></div><div style="color: rgb(45, 184, 75); float: right; font-size: 12px; padding-right: 10px; padding-top: 11px;">Very Easy</div></a></div><div class="item no-highlight" role="listitem"><div class="right floated content"><div aria-expanded="false" class="ui simple top right pointing dropdown" role="listbox" style="margin-bottom: 30px; margin-top: 0px; padding-bottom: 3px;" tabindex="0"><div aria-live="polite" class="text" role="alert"></div><i aria-hidden="true" class="ellipsis horizontal large link icon"></i><div class="menu transition" style="margin-right: -4px; margin-top: 0px; min-width: 115px;"><div aria-disabled="true" class="disabled item" role="option">Add to bookmarks</div><div aria-disabled="true" class="disabled item" role="option">Add to collection</div></div></div></div><a class="content" href="/challenge/oXTJtJqbzqYB2ReH6"><h3 class="header">Find Triangle Area</h3><div class="description" style="font-size: 1.05rem; min-height: 45px;">Build a function that receives the base and height of a triangle and gives back its area. Examples triArea(3, 2) ➞ 3 triArea(7, 4) ➞ 14 triArea(10, 10) ➞ 50 Notes The area of a triangle is: (base * height) / 2 Remember to return the result. If a challenge stumps you, seek hints in the Resources tab. If you're really st …</div><div class="tags"><div class="ui small label">geometry</div><div class="ui small label">math</div><div class="ui small label">numbers</div></div><div style="color: rgb(45, 184, 75); float: right; font-size: 12px; padding-right: 10px; padding-top: 11px;">Very Easy</div></a></div><div class="item no-highlight" role="listitem"><div class="right floated content"><div aria-expanded="false" class="ui simple top right pointing dropdown" role="listbox" style="margin-bottom: 30px; margin-top: 0px; padding-bottom: 3px;" tabindex="0"><div aria-live="polite" class="text" role="alert"></div><i aria-hidden="true" class="ellipsis horizontal large link icon"></i><div class="menu transition" style="margin-right: -4px; margin-top: 0px; min-width: 115px;"><div aria-disabled="true" class="disabled item" role="option">Add to bookmarks</div><div aria-disabled="true" class="disabled item" role="option">Add to collection</div></div></div></div><a class="content" href="/challenge/gsffHgkQZniRXwJXs"><h3 class="header">Longest Edge of a Triangle</h3><div class="description" style="font-size: 1.05rem; min-height: 45px;">Make a function that determines the greatest possible length of a triangle's third edge, given that every side length is an integer. Examples nextEdge(8, 10) ➞ 17 nextEdge(5, 7) ➞ 11 nextEdge(9, 2) ➞ 10 Notes (side1 + side2) - 1 = maximum range of third edge. The side lengths of the triangle are positive integers. Don't forget to return …</div><div class="tags"><div class="ui small label">algorithms</div><div class="ui small label">math</div><div class="ui small label">numbers</div></div><div style="color: rgb(45, 184, 75); float: right; font-size: 12px; padding-right: 10px; padding-top: 11px;">Very Easy</div></a></div><div class="item no-highlight" role="listitem"><div class="right floated content"><div aria-expanded="false" class="ui simple top right pointing dropdown" role="listbox" style="margin-bottom: 30px; margin-top: 0px; padding-bottom: 3px;" tabindex="0"><div aria-live="polite" class="text" role="alert"></div><i aria-hidden="true" class="ellipsis horizontal large link icon"></i><div class="menu transition" style="margin-right: -4px; margin-top: 0px; min-width: 115px;"><div aria-disabled="true" class="disabled item" role="option">Add to bookmarks</div><div aria-disabled="true" class="disabled item" role="option">Add to collection</div></div></div></div><a class="content" href="/challenge/RTEiB6WTEPwjfvF9o"><h3 class="header">Give Me Something Back!</h3><div class="description" style="font-size: 1.05rem; min-height: 45px;">Build a function that returns the string "something" combined with a space " " followed by the supplied argument a. Examples giveMeSomething("is better than nothing") ➞ "something is better than nothing" giveMeSomething("Bob Jane") ➞ "something Bob Jane" giveMeSomething("something") ➞ "something something" Notes Assume an input is given.</div><div class="tags"><div class="ui small label">language_fundamentals</div><div class="ui small label">strings</div></div><div style="color: rgb(45, 184, 75); float: right; font-size: 12px; padding-right: 10px; padding-top: 11px;">Very Easy</div></a></div><div class="item no-highlight" role="listitem"><div class="right floated content"><div aria-expanded="false" class="ui simple top right pointing dropdown" role="listbox" style="margin-bottom: 30px; margin-top: 0px; padding-bottom: 3px;" tabindex="0"><div aria-live="polite" class="text" role="alert"></div><i aria-hidden="true" class="ellipsis horizontal large link icon"></i><div class="menu transition" style="margin-right: -4px; margin-top: 0px; min-width: 115px;"><div aria-disabled="true" class="disabled item" role="option">Add to bookmarks</div><div aria-disabled="true" class="disabled item" role="option">Add to collection</div></div></div></div><a class="content" href="/challenge/dao7bqK4fuzTudDdB"><h3 class="header">Fetch the First Element of an Array</h3><div class="description" style="font-size: 1.05rem; min-height: 45px;">Make a function that accepts an array holding only numbers and gives back its first element. Examples getFirstValue([1, 2, 3]) ➞ 1 getFirstValue([80, 5, 100]) ➞ 80 getFirstValue([-500, 0, 50]) ➞ -500 Notes The first element in an array always has an index of 0.</div><div class="tags"><div class="ui small label">arrays</div><div class="ui small label">language_fundamentals</div></div><div style="color: rgb(45, 184, 75); float: right; font-size: 12px; padding-right: 10px; padding-top: 11px;">Very Easy</div></a></div><div class="item no-highlight" role="listitem"><div class="right floated content"><div aria-expanded="false" class="ui simple top right pointing dropdown" role="listbox" style="margin-bottom: 30px; margin-top: 0px; padding-bottom: 3px;" tabindex="0"><div aria-live="polite" class="text" role="alert"></div><i aria-hidden="true" class="ellipsis horizontal large link icon"></i><div class="menu transition" style="margin-right: -4px; margin-top: 0px; min-width: 115px;"><div aria-disabled="true" class="disabled item" role="option">Add to bookmarks</div><div aria-disabled="true" class="disabled item" role="option">Add to collection</div></div></div></div><a class="content" href="/challenge/6Q9QLnFf73Cp4QwRK"><h3 class="header">Transform Hours Into Seconds</h3><div class="description" style="font-size: 1.05rem; min-height: 45px;">Build a function that turns a number of hours into seconds. Examples howManySeconds(2) ➞ 7200 howManySeconds(10) ➞ 36000 howManySeconds(24) ➞ 86400 Notes 60 seconds in a minute, 60 minutes in an hour Remember to return your answer.</div><div class="tags"><div class="ui small label">language_fundamentals</div><div class="ui small label">math</div><div class="ui small label">numbers</div></div><div style="color: rgb(45, 184, 75); float: right; font-size: 12px; padding-right: 10px; padding-top: 11px;">Very Easy</div></a></div><div class="item no-highlight" role="listitem"><div class="right floated content"><div aria-expanded="false" class="ui simple top right pointing dropdown" role="listbox" style="margin-bottom: 30px; margin-top: 0px; padding-bottom: 3px;" tabindex="0"><div aria-live="polite" class="text" role="alert"></div><i aria-hidden="true" class="ellipsis horizontal large link icon"></i><div class="menu transition" style="margin-right: -4px; margin-top: 0px; min-width: 115px;"><div aria-disabled="true" class="disabled item" role="option">Save to favorites</div><div aria-disabled="true" class="disabled item" role="option">Add to a folder</div></div></div></div><a class="content" href="/challenge/dewkJQufEq3nwNeGZ"><h3 class="header">Determine Whether a Number Is Zero or Below</h3><div class="description" style="font-size: 1.05rem; min-height: 45px;">Write a function that accepts a single number and gives back true whenever that value sits at zero or below, and returns false in every other case. Examples lessThanOrEqualToZero(5) ➞ false lessThanOrEqualToZero(0) ➞ true lessThanOrEqualToZero(-2) ➞ true Notes Remember to actually return your answer. Stuck partway through a challenge?</div><div class="tags"><div class="ui small label">conditions</div><div class="ui small label">language_fundamentals</div><div class="ui small label">validation</div></div><div style="color: rgb(45, 184, 75); float: right; font-size: 12px; padding-right: 10px; padding-top: 11px;">Very Easy</div></a></div><div class="item no-highlight" role="listitem"><div class="right floated content"><div aria-expanded="false" class="ui simple top right pointing dropdown" role="listbox" style="margin-bottom: 30px; margin-top: 0px; padding-bottom: 3px;" tabindex="0"><div aria-live="polite" class="text" role="alert"></div><i aria-hidden="true" class="ellipsis horizontal large link icon"></i><div class="menu transition" style="margin-right: -4px; margin-top: 0px; min-width: 115px;"><div aria-disabled="true" class="disabled item" role="option">Save to favorites</div><div aria-disabled="true" class="disabled item" role="option">Add to a folder</div></div></div></div><a class="content" href="/challenge/AoMSgAXDBNN9RuBGR"><h3 class="header">The Barnyard Count</h3><div class="description" style="font-size: 1.05rem; min-height: 45px;">A farmer wants your help working out the grand total of legs walking around his property. He raises exactly three kinds of animal: chickens = 2 legs cows = 4 legs pigs = 4 legs He has already tallied his herd and hands you a headcount for each kind. Your job is to build a function that adds everything together and hands back the full nu …</div><div class="tags"><div class="ui small label">algorithms</div><div class="ui small label">language_fundamentals</div><div class="ui small label">math</div></div><div style="color: rgb(45, 184, 75); float: right; font-size: 12px; padding-right: 10px; padding-top: 11px;">Very Easy</div></a></div><div class="item no-highlight" role="listitem"><div class="right floated content"><div aria-expanded="false" class="ui simple top right pointing dropdown" role="listbox" style="margin-bottom: 30px; margin-top: 0px; padding-bottom: 3px;" tabindex="0"><div aria-live="polite" class="text" role="alert"></div><i aria-hidden="true" class="ellipsis horizontal large link icon"></i><div class="menu transition" style="margin-right: -4px; margin-top: 0px; min-width: 115px;"><div aria-disabled="true" class="disabled item" role="option">Save to favorites</div><div aria-disabled="true" class="disabled item" role="option">Add to a folder</div></div></div></div><a class="content" href="/challenge/pmc8yQsi7kXqqxjfn"><h3 class="header">Return What Is Left After Dividing</h3><div class="description" style="font-size: 1.05rem; min-height: 45px;">PHP ships with one handy operator that hands you whatever is left over once a division is done. You'll get two numbers as parameters, and dividing the first by the second leaves some remainder, which might even be zero. Send that leftover back. Examples remainder(1, 3) ➞ 1 remainder(3, 4) ➞ 3 remainder(-9, 45) ➞ -9 remainde …</div><div class="tags"><div class="ui small label">math</div><div class="ui small label">numbers</div></div><div style="color: rgb(45, 184, 75); float: right; font-size: 12px; padding-right: 10px; padding-top: 11px;">Very Easy</div></a></div><div class="item no-highlight" role="listitem"><div class="right floated content"><div aria-expanded="false" class="ui simple top right pointing dropdown" role="listbox" style="margin-bottom: 30px; margin-top: 0px; padding-bottom: 3px;" tabindex="0"><div aria-live="polite" class="text" role="alert"></div><i aria-hidden="true" class="ellipsis horizontal large link icon"></i><div class="menu transition" style="margin-right: -4px; margin-top: 0px; min-width: 115px;"><div aria-disabled="true" class="disabled item" role="option">Save to favorites</div><div aria-disabled="true" class="disabled item" role="option">Add to a folder</div></div></div></div><a class="content" href="/challenge/j4YKasu6Erx4fJwXG"><h3 class="header">Spot the Empty String</h3><div class="description" style="font-size: 1.05rem; min-height: 45px;">Build a function that gives back true when a string holds nothing at all, and false in any other situation. Examples isEmpty("") ➞ true isEmpty(" ") ➞ false isEmpty("a") ➞ false Notes A string made up purely of whitespace " " still does not count as empty here. Remember to return your answer. Stuck on this one? Grab a hint from the Resources tab. If …</div><div class="tags"><div class="ui small label">language_fundamentals</div><div class="ui small label">strings</div><div class="ui small label">validation</div></div><div style="color: rgb(45, 184, 75); float: right; font-size: 12px; padding-right: 10px; padding-top: 11px;">Very Easy</div></a></div><div class="item no-highlight" role="listitem"><div class="right floated content"><div aria-expanded="false" class="ui simple top right pointing dropdown" role="listbox" style="margin-bottom: 30px; margin-top: 0px; padding-bottom: 3px;" tabindex="0"><div aria-live="polite" class="text" role="alert"></div><i aria-hidden="true" class="ellipsis horizontal large link icon"></i><div class="menu transition" style="margin-right: -4px; margin-top: 0px; min-width: 115px;"><div aria-disabled="true" class="disabled item" role="option">Save to favorites</div><div aria-disabled="true" class="disabled item" role="option">Add to a folder</div></div></div></div><a class="content" href="/challenge/YQvcsY6soWd7RTk28"><h3 class="header">From Years into Days</h3><div class="description" style="font-size: 1.05rem; min-height: 45px;">Write a function that receives an age measured in years and returns that same age counted in days. Examples calcAge(65) ➞ 23725 calcAge(0) ➞ 0 calcAge(20) ➞ 7300 Notes Treat every year as 365 days for the purposes of this challenge. Don't worry about leap years or the days between someone's last birthday and today.</div><div class="tags"><div class="ui small label">math</div><div class="ui small label">numbers</div></div><div style="color: rgb(45, 184, 75); float: right; font-size: 12px; padding-right: 10px; padding-top: 11px;">Very Easy</div></a></div><div class="item no-highlight" role="listitem"><div class="right floated content"><div aria-expanded="false" class="ui simple top right pointing dropdown" role="listbox" style="margin-bottom: 30px; margin-top: 0px; padding-bottom: 3px;" tabindex="0"><div aria-live="polite" class="text" role="alert"></div><i aria-hidden="true" class="ellipsis horizontal large link icon"></i><div class="menu transition" style="margin-right: -4px; margin-top: 0px; min-width: 115px;"><div aria-disabled="true" class="disabled item" role="option">Save to favorites</div><div aria-disabled="true" class="disabled item" role="option">Add to a folder</div></div></div></div><a class="content" href="/challenge/xtzaoaLJF6ddEvTvw"><h3 class="header">Work Out a Rectangle's Perimeter</h3><div class="description" style="font-size: 1.05rem; min-height: 45px;">Write a function that accepts $length and $width and works out the perimeter of a rectangle from them. Examples findPerimeter(6, 7) ➞ 26 findPerimeter(20, 10) ➞ 60 findPerimeter(2, 9) ➞ 22 Notes Remember to return your answer. If you hit a wall, look for help in the Resources tab. Still totally stuck? The Solutions tab has you covered.</div><div class="tags"><div class="ui small label">geometry</div><div class="ui small label">language_fundamentals</div><div class="ui small label">math</div><div class="ui small label">numbers</div></div><div style="color: rgb(45, 184, 75); float: right; font-size: 12px; padding-right: 10px; padding-top: 11px;">Very Easy</div></a></div><div class="item no-highlight" role="listitem"><div class="right floated content"><div aria-expanded="false" class="ui simple top right pointing dropdown" role="listbox" style="margin-bottom: 30px; margin-top: 0px; padding-bottom: 3px;" tabindex="0"><div aria-live="polite" class="text" role="alert"></div><i aria-hidden="true" class="ellipsis horizontal large link icon"></i><div class="menu transition" style="margin-right: -4px; margin-top: 0px; min-width: 115px;"><div aria-disabled="true" class="disabled item" role="option">Add to bookmarks</div><div aria-disabled="true" class="disabled item" role="option">Add to collection</div></div></div></div><a class="content" href="/challenge/7d8kQJZHpSKkp7ZbD"><h3 class="header">Fix the Bugs (Part 6)</h3><div class="description" style="font-size: 1.05rem; min-height: 45px;">Bugsy needs to strip every digit out of a given string! Lend a hand by repairing the code in the code tab so it clears this challenge. Study the examples below to understand exactly what the function is meant to do. Examples removeNumbers("bugsy1") ➞ "bugsy" removeNumbers("12co23de") ➞ "code" removeNumbers("p1r2a3x4i5d6e") ➞ "praxide" …</div><div class="tags"><div class="ui small label">bugs</div><div class="ui small label">formatting</div><div class="ui small label">interview</div><div class="ui small label">strings</div></div><div style="color: rgb(45, 184, 75); float: right; font-size: 12px; padding-right: 10px; padding-top: 11px;">Very Easy</div></a></div><div class="item no-highlight" role="listitem"><div class="right floated content"><div aria-expanded="false" class="ui simple top right pointing dropdown" role="listbox" style="margin-bottom: 30px; margin-top: 0px; padding-bottom: 3px;" tabindex="0"><div aria-live="polite" class="text" role="alert"></div><i aria-hidden="true" class="ellipsis horizontal large link icon"></i><div class="menu transition" style="margin-right: -4px; margin-top: 0px; min-width: 115px;"><div aria-disabled="true" class="disabled item" role="option">Add to bookmarks</div><div aria-disabled="true" class="disabled item" role="option">Add to collection</div></div></div></div><a class="content" href="/challenge/Bk9wcbQJDopzS64yZ"><h3 class="header">Detect If an Integer Is Divisible By Five</h3><div class="description" style="font-size: 1.05rem; min-height: 45px;">Write a function that gives back true when an integer divides evenly by 5, and false in every other case. Examples divisibleByFive(5) ➞ true divisibleByFive(-55) ➞ true divisibleByFive(37) ➞ false Notes Remember to return your answer. Whenever a challenge trips you up, look for hints in the Resources tab. If you're really stuck, unlo …</div><div class="tags"><div class="ui small label">math</div><div class="ui small label">numbers</div><div class="ui small label">validation</div></div><div style="color: rgb(45, 184, 75); float: right; font-size: 12px; padding-right: 10px; padding-top: 11px;">Very Easy</div></a></div><div class="item no-highlight" role="listitem"><div class="right floated content"><div aria-expanded="false" class="ui simple top right pointing dropdown" role="listbox" style="margin-bottom: 30px; margin-top: 0px; padding-bottom: 3px;" tabindex="0"><div aria-live="polite" class="text" role="alert"></div><i aria-hidden="true" class="ellipsis horizontal large link icon"></i><div class="menu transition" style="margin-right: -4px; margin-top: 0px; min-width: 115px;"><div aria-disabled="true" class="disabled item" role="option">Add to bookmarks</div><div aria-disabled="true" class="disabled item" role="option">Add to collection</div></div></div></div><a class="content" href="/challenge/BXshCsqwtB6NMuQWH"><h3 class="header">Combine First and Last Name into a Single String</h3><div class="description" style="font-size: 1.05rem; min-height: 45px;">You're handed two strings, firstName and lastName; hand back one string arranged in the format "last, first". Examples concatName("First", "Last") ➞ "Last, First" concatName("John", "Doe") ➞ "Doe, John" concatName("Mary", "Jane") ➞ "Jane, Mary" Notes Remember to return your answer. Whenever a challenge trips you up, find hints in the R …</div><div class="tags"><div class="ui small label">formatting</div><div class="ui small label">language_fundamentals</div><div class="ui small label">strings</div></div><div style="color: rgb(45, 184, 75); float: right; font-size: 12px; padding-right: 10px; padding-top: 11px;">Very Easy</div></a></div><div class="item no-highlight" role="listitem"><div class="right floated content"><div aria-expanded="false" class="ui simple top right pointing dropdown" role="listbox" style="margin-bottom: 30px; margin-top: 0px; padding-bottom: 3px;" tabindex="0"><div aria-live="polite" class="text" role="alert"></div><i aria-hidden="true" class="ellipsis horizontal large link icon"></i><div class="menu transition" style="margin-right: -4px; margin-top: 0px; min-width: 115px;"><div aria-disabled="true" class="disabled item" role="option">Add to bookmarks</div><div aria-disabled="true" class="disabled item" role="option">Add to collection</div></div></div></div><a class="content" href="/challenge/HxJ7XYSQe4qkJjf2s"><h3 class="header">Divisible by 100</h3><div class="description" style="font-size: 1.05rem; min-height: 45px;">Build a function that accepts an integer and returns true whenever it can be divided by 100, and false if it cannot. Examples divisible(1) ➞ false divisible(1000) ➞ true divisible(100) ➞ true Notes Remember to return your answer. Whenever a challenge trips you up, look for hints in the Resources tab. If you're really stuck, unlock solu …</div><div class="tags"><div class="ui small label">algebra</div><div class="ui small label">conditions</div><div class="ui small label">math</div><div class="ui small label">validation</div></div><div style="color: rgb(45, 184, 75); float: right; font-size: 12px; padding-right: 10px; padding-top: 11px;">Very Easy</div></a></div><div class="item no-highlight" role="listitem"><div class="right floated content"><div aria-expanded="false" class="ui simple top right pointing dropdown" role="listbox" style="margin-bottom: 30px; margin-top: 0px; padding-bottom: 3px;" tabindex="0"><div aria-live="polite" class="text" role="alert"></div><i aria-hidden="true" class="ellipsis horizontal large link icon"></i><div class="menu transition" style="margin-right: -4px; margin-top: 0px; min-width: 115px;"><div aria-disabled="true" class="disabled item" role="option">Add to bookmarks</div><div aria-disabled="true" class="disabled item" role="option">Add to collection</div></div></div></div><a class="content" href="/challenge/TYo6r3g3ZXBhnHHgg"><h3 class="header">Fix the Syntax Errors</h3><div class="description" style="font-size: 1.05rem; min-height: 45px;">Repair the code in the code tab so it clears this challenge (you'll only find syntax errors). Study the examples below to get a feel for what the function should do. Examples squared(5) ➞ 25 squared(9) ➞ 81 squared(100) ➞ 10000 Notes READ EVERY WORD CAREFULLY, CHARACTER BY CHARACTER! Don't overthink this one; it isn't meant to be …</div><div class="tags"><div class="ui small label">algebra</div><div class="ui small label">bugs</div><div class="ui small label">language_fundamentals</div></div><div style="color: rgb(45, 184, 75); float: right; font-size: 12px; padding-right: 10px; padding-top: 11px;">Very Easy</div></a></div></div><button class="ui fluid button" role="button"><span>LOAD MORE</span></button></div></div></div></div></main><footer id="Footer"><div class="ui container no-highlight" style="margin: 0px; padding: 0px;"><div class="ui fitted divider" style="margin-bottom: 20px;"></div><div class="ui horizontal right floated list" role="list"><a class="item fancy-link" href="/contact" role="listitem"><span>Contact</span></a><a class="item fancy-link" href="/_404.html" role="listitem" target="_blank"><span>Blog</span></a><a class="item fancy-link" href="/about" role="listitem"><span>About</span></a></div><div class="ui horizontal left floated list" role="list"><div class="disabled item" role="listitem">© 2021 Praxide, Inc</div><a class="item fancy-link" href="/docs/terms" role="listitem"><span>Terms</span></a><a class="item fancy-link" href="/docs/privacy" role="listitem"><span>Privacy</span></a><a class="item fancy-link" href="/roadmap" role="listitem"><span>Roadmap</span></a><a class="item fancy-link" href="/affiliates" role="listitem"><span>Affiliates</span></a><a class="item fancy-link" href="/help" role="listitem"><span>Help</span></a></div><div aria-expanded="false" class="ui button compact labeled upward dropdown icon" role="listbox" style="bottom: 0px; margin-bottom: 7px; min-width: 122px; position: fixed; right: 4px;" tabindex="0"><div aria-live="polite" class="text" role="alert">English</div><i aria-hidden="true" class="caret up icon"></i><div class="menu transition"><div aria-checked="true" aria-selected="true" class="active selected item" role="option" style="pointer-events: all;">English</div><div aria-checked="false" aria-selected="false" class="item" role="option" style="pointer-events: all;">Español</div><div aria-checked="false" aria-selected="false" class="item" role="option" style="pointer-events: all;">Français</div><div aria-checked="false" aria-selected="false" class="item" role="option" style="pointer-events: all;">Deutsch</div><div aria-checked="false" aria-selected="false" class="item" role="option" style="pointer-events: all;">Português</div><div aria-checked="false" aria-selected="false" class="item" role="option" style="pointer-events: all;">日本語</div><div aria-checked="false" aria-selected="false" class="item" role="option" style="pointer-events: all;">中文</div><div aria-checked="false" aria-selected="false" class="item" role="option" style="pointer-events: all;">Pусский</div></div></div></div></footer><div class="s-alert-wrapper"></div></div></div><script src="/cr-site.js"></script>
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