instruction stringlengths 15 30k |
|---|
This should probably be on the math stackexchange. It's a differential equations problem.
The interesting part about the elastic band is that it provides the ant with a fraction of the car's velocity. The fraction varies depending on how far along the elastic the ant has gotten. For instance, at t = 0 when the ant i... |
There is a problem from M.Gardner book *("Wheels, Life, and other Mathematical Amusements", p. 201)*:
> [Hallard T. Croft] asked if there existed a finite set of points on the plane such that the perpendicular bisector of the line segment joining any two points would always pass through at least two other points of ... |
>! The ant never reaches the car, if the car is fast enough.
At time $t$, the velocity of the car is $ct$, and the length of the rope is $1+\frac12ct^2$. Track the fractional progress of the ant, who starts 0% of the way along the rope and wishes to reach the car positioned at 100%.
At time $t$, the ant's fractio... |
[War has broken out in the kingdom.][1] The king's castle is guarded pretty heavily, by guards with instructions to kill anyone who can't produce the correct password.
Unbeknownst to the guards, the beggars near the main gate are in fact enemy spies. They listen intently as the first knight approaches. "Six!", the g... |
[War has broken out in the kingdom.][1] The king's castle is guarded pretty heavily, by guards with instructions to kill anyone who can't produce the correct password.
Unbeknownst to the guards, the beggars near the main gate are in fact enemy spies. They listen intently as the first knight approaches. "Six!", the g... |
<b>Dilemma</b>
<p>You are taken to a dark room and given two thin long rods - 30 cm long and 1 cm thick. One of them is a permanent magnet and the other is pure iron which is not magnetized. </p>
<p>Both of them are insulated with glass. They weigh the same. The shapes are same too. How can you tell which one of th... |
I will try for the intuitive argument
When the problem starts the difference in speeds is c-a
When the ant catches up to to the car and is crawling on the bumper it is c+a
the ant will be at the speed of the car at (1-a/c)*100% of the band. After that he is going faster and will eventually overtake the car
So ... |
The intuitive case is roughly this.
Assume the ant begins at some point, $ P $, which is some fraction of the distance along the rope. The ant travels at $a$ and the car travels at $c$.
Now imagine a point, $P'$, which is $ \frac{a}{2c} $ percent of the rope's total length towards the car. The ant will clearly ... |
This is Part 3 of the Murder of the President brainteaser/riddle. If you have not already, you might want to see the answer for [Murder of the President - Part 1](http://puzzling.stackexchange.com/questions/3600/murder-of-the-president-part-1) posted by Nit and the answer for [Murder of the President - Part 2](http://p... |
I will try for the intuitive argument
When the problem starts the difference in speeds is c-a
When the ant catches up to to the car and is crawling on the bumper it is c+a
the ant will be at the speed of the car at (1-a/c)*100% of the band. After that he is going faster and will eventually overtake the car
So ... |
This is Part 3 of the Murder of the President brainteaser/riddle. If you have not already, you might want to see the answer for [Murder of the President - Part 1](http://puzzling.stackexchange.com/questions/3600/murder-of-the-president-part-1) posted by Nit and the answer for [Murder of the President - Part 2](http://p... |
A party is being held at a local mansion. The host is very rich and his success is because of one thing ~ his famous recipe for Spaghetti!
The only guests that may attend are people the host knows and trusts, whom he gave the password to enter to.
Here's where you come in. You and a friend are trying to steal thi... |
Before trying to break the other eight codes, it would be a good idea to figure out what the message written in marker says first.
> Every <sup>4</sup>⁄<sub>16</sub>
> WDFPSSDOQWXLVMKYSGFACRVLKJJPDDDHMNNAZXZBQWSEXNXTKJDIXXXC
If we take every fourth letter in the large string of letters, we get "POLYALPHA... |
A car starts distance 1 from a wall then drives away at constant **acceleration** $c$. There is length of elastic tied between the wall and the car. Remarkably, this doesn't affect the motion of the car (in reality the elastic would snap or its tension slow the car).
Meanwhile, an ant crawls from the wall on to the ... |
A party is being held at a local mansion. The host is very rich and his success is because of one thing ~ his famous recipe for Spaghetti!
The only guests that may attend are people who correctly reply to the guard at the door.
Here's where you come in. You and a friend are trying to steal this recipe. You sneak ... |
A party is being held at a local mansion. The host is very rich and his success is because of one thing ~ his famous recipe for Spaghetti!
The only guests that may attend are people who correctly reply to the guard at the door.
Here's where you come in. You and a friend are trying to steal this recipe. You sneak ... |
A party is being held at a local mansion. The host is very rich and his success is because of one thing ~ his famous recipe for Spaghetti!
The only guests that may attend are people who correctly reply to the guard at the door.
Here's where you come in. You and a friend are trying to steal this recipe. You sneak ... |
Of course it means "try to quit" but more along the lines of a stalker's threat. (Seriously, is that really the best that Anne can do?) John needs to get out of there as quickly as possible...do not ask questions, do not look back, leave no forwarding address. In the words of the great philosopher: "You can check out ... |
A party is being held at a local mansion. The host is very rich and his success is because of one thing ~ his famous recipe for Spaghetti!
The only guests that may attend are people who correctly reply to the guard at the door.
Here's where you come in. You and a friend are trying to steal this recipe. You sneak ... |
A party is being held at a local mansion. The host is very rich and his success is because of one thing ~ his famous recipe for Spaghetti!
The only guests that may attend are people who correctly reply to the guard at the door.
Here's where you come in. You and a friend are trying to steal this recipe. You sneak ... |
A party is being held at a local mansion. The host is very rich and his success is because of one thing ~ his famous recipe for Spaghetti!
The only guests that may attend are people who correctly reply to the guard at the door.
Here's where you come in. You and a friend are trying to steal this recipe. You sneak ... |
A party is being held at a local mansion. The host is very rich and his success is because of one thing ~ his famous recipe for Spaghetti!
The only guests that may attend are people who correctly reply to the guard at the door.
Here's where you come in. You and a friend are trying to steal this recipe. You sneak ... |
prime and not prime????? This looks weirdly incorrect to me, but somehow fits, right?
1, 5, 3 responses are 0
6 is 1
2 is not 1 , which I may presume is 0.
hence for 7 , it should be 0 |
Number of circles in the figure ????
It seems ridiculous, but 5,3,1 have got no full circles, 6 has got 1, 8 has 2
Then for 7 the reply should be 0 |
A party is being held at a local mansion. The host is very rich and his success is because of one thing ~ his famous recipe for Spaghetti!
The only guests that may attend are people who correctly reply to the guard at the door.
Here's where you come in. You and a friend are trying to steal this recipe. You sneak ... |
A party is being held at a local mansion. The host is very rich and his success is because of one thing — his famous recipe for Spaghetti!
The only guests that may attend are people who correctly reply to the guard at the door.
Here's where you come in. You and a friend are trying to steal this recipe. You sneak ... |
>! Number of circles in the figure ????
It seems ridiculous, but 5,3,1 have got no full circles, 6 has got 1, 8 has 2
Then for 7 the reply should be 0 |
>!Number of circles in the figure ????
It seems ridiculous, but
>!5,3,1 have got no full circles, 6 has got 1, 8 has 2
Then for 7 the reply should be
>! 0 |
There are 5 solutions to your particular problem.
1. i1 $\rightarrow$ i2 $\rightarrow$ i3 $\rightarrow$ i4
1. i3 $\rightarrow$ i1 $\rightarrow$ i2 $\rightarrow$ i4
1. i4 $\rightarrow$ i1 $\rightarrow$ i2 $\rightarrow$ i3
1. i4 $\rightarrow$ i1 $\rightarrow$ i3 $\rightarrow$ i2
1. i2 $\rightarrow$ i1 $\rightarrow... |
There are 5 solutions to your particular problem.
1. i1 $\rightarrow$ i2 $\rightarrow$ i3 $\rightarrow$ i4
1. i3 $\rightarrow$ i1 $\rightarrow$ i2 $\rightarrow$ i4
1. i4 $\rightarrow$ i1 $\rightarrow$ i2 $\rightarrow$ i3
1. i4 $\rightarrow$ i1 $\rightarrow$ i3 $\rightarrow$ i2
1. i2 $\rightarrow$ i1 $\rightarrow... |
Linda sadly passes away in a stampede of elephants and when she reaches St. Peter, she is crying because she doesn't think she'll be buried properly on the family graveplot. However, on explaining her distress to St. Peter he smiles knowingly and hands her a card which he says is from Linda's husband back on the ground... |
A party is being held at a local mansion. The host is very rich and his success is because of one thing — his famous recipe for Spaghetti!
The only guests that may attend are people who correctly reply to the guard at the door.
Here's where you come in. You and a friend are trying to steal this recipe. You sneak ... |
Linda sadly passes away in a stampede of elephants and when she reaches St. Peter, she is distressed because she doesn't think she'll be buried properly on the family grave plot and having to listen to her mother complain about her not being buried beside her will make even eternal paradise enjoyable. However, on expla... |
A party is being held at a local mansion. The host is very rich and his success is because of one thing — his famous recipe for Spaghetti!
The only guests that may attend are people who correctly reply to the guard at the door.
Here's where you come in. You and a friend are trying to steal this recipe. You sneak ... |
There are 5 solutions to your particular problem.
1. i1 $\rightarrow$ i2 $\rightarrow$ i3 $\rightarrow$ i4
1. i3 $\rightarrow$ i1 $\rightarrow$ i2 $\rightarrow$ i4
1. i4 $\rightarrow$ i1 $\rightarrow$ i2 $\rightarrow$ i3
1. i4 $\rightarrow$ i1 $\rightarrow$ i3 $\rightarrow$ i2
1. i2 $\rightarrow$ i1 $\rightarrow... |
A party is being held at a local mansion. The host is very rich and his success is because of one thing — his famous recipe for Spaghetti!
The only guests that may attend are people who correctly reply to the guard at the door.
Here's where you come in. You and a friend are trying to steal this recipe. You sneak ... |
A party is being held at a local mansion. The host is very rich and his success is because of one thing — his famous recipe for Spaghetti!
The only guests that may attend are people who correctly reply to the guard at the door.
Here's where you come in. You and a friend are trying to steal this recipe. You sneak ... |
Linda sadly passes away in a stampede of elephants and when she reaches St. Peter, she is distressed because she doesn't think she'll be buried properly on the family grave plot and having to listen to her mother complain about her not being buried beside her will make even eternal paradise unenjoyable. However, on exp... |
A party is being held at a local mansion. The host is very rich and his success is because of one thing — his famous recipe for Spaghetti!
The only guests that may attend are people who correctly reply to the guard at the door.
Here's where you come in. You and a friend are trying to steal this recipe. You sneak ... |
There are 5 solutions to your particular problem.
1. $i_1 \rightarrow i_2 \rightarrow i_3 \rightarrow i_4$
2. $i_3 \rightarrow i_1 \rightarrow i_2 \rightarrow i_4$
3. $i_4 \rightarrow i_1 \rightarrow i_2 \rightarrow i_3$
4. $i_4 \rightarrow i_1 \rightarrow i_3 \rightarrow i_2$
5. $i_2 \rightarrow i_1 \rightarrow... |
Linda sadly passes away in a stampede of elephants and when she reaches St. Peter, she is distressed because she doesn't think she'll be buried properly on the family grave plot and having to listen to her mother complain about her not being buried beside her will make even eternal paradise unenjoyable. However, on exp... |
A party is being held at a local mansion. The host is very rich and his success is because of one thing — his famous recipe for Spaghetti!
The only guests that may attend are people who correctly reply to the guard at the door.
Here's where you come in. You and a friend are trying to steal this recipe. You sneak ... |
A party is being held at a local mansion. The host is very rich and his success is because of one thing — his famous recipe for Spaghetti!
The only guests that may attend are people who correctly reply to the guard at the door.
Here's where you come in. You and a friend are trying to steal this recipe. You sneak ... |
A party is being held at a local mansion. The host is very rich and his success is because of one thing — his famous recipe for Spaghetti!
The only guests that may attend are people who correctly reply to the guard at the door.
Here's where you come in. You and a friend are trying to steal this recipe. You sneak ... |
A party is being held at a local mansion. The host is very rich and his success is because of one thing — his famous recipe for spaghetti!
The only guests that may attend are people who correctly reply to the guard at the door.
Here's where you come in. You and a friend are trying to steal this recipe. You ... |
A party is being held at a local mansion. The host is very rich and his success is because of one thing ~ his famous recipe for Spaghetti!
The only guests that may attend are people the host knows and trusts, whom he gave the password to enter to.
Here's where you come in. You and a friend are trying to steal thi... |
A party is being held at a local mansion. The host is very rich and his success is because of one thing ~ his famous recipe for Spaghetti!
The only guests that may attend are people the host knows and trusts, whom he gave the password to enter to.
Here's where you come in. You and a friend are trying to steal thi... |
A party is being held at a local mansion. The host is very rich and his success is because of one thing ~ his famous recipe for Spaghetti!
The only guests that may attend are people the host knows and trusts, whom he gave the password to enter to.
Here's where you come in. You and a friend are trying to steal thi... |
Linda sadly passes away in a stampede of elephants and when she reaches St. Peter, she is distressed because she doesn't think she'll be buried properly on the family grave plot and having to listen to her mother complain about her not being buried beside her will make even eternal paradise unenjoyable. However, on exp... |
The open questions in the other answers create loopholes that can lead to the answer not being discernable. - We have little assurances about what the lying troll answers to "what would you tell me if...". The only thing we know is that the lying troll would not say "I would say yes" (if the truthfull answer to the c... |
A party is being held at a local mansion. The host is very rich and his success is because of one thing — his famous recipe for Spaghetti!
The only guests that may attend are people who correctly reply to the guard at the door.
Here's where you come in. You and a friend are trying to steal this recipe. You sneak ... |
I've seen a variation of this before:
>! Take to Taking
>! I see Your
>! Which reads as "I undertake to oversee your undertaking". You don't allow the word "see" but I assume it's a variation of that....? |
I've seen a variation of this before:
>! ` Take to Taking`
>! ` I see Your`
>!
>! Which reads as "I undertake to oversee your undertaking". You don't allow the word "see" but I assume it's a variation of that....? |
A party is being held at a local mansion. The host is very rich and his success is because of one thing ~ his famous recipe for Spaghetti!
The only guests that may attend are people the host knows and trusts, whom he gave the password to enter to.
Here's where you come in. You and a friend are trying to steal thi... |
You are going through the belongings of your recently deceased uncle and come upon a small wooden box with the following inscription, presumably describing its contents.
Those who take me, won't know me.
Those who know me, won't want me.
Those who want me, will make me.
Those who make me, will giv... |
All I can think of is some kind of
>! unpleasant drug... maybe something which makes people's memories hazy?
Those who take me, won't know me
>! makes people forget they've taken it
Those who know me, won't want me
>! If you know about it you won't take it!
Those who want me, will make me
>! Bad guys mak... |
>! Some kind of undetectable poison
>!
>! If you take (drink?) an undetectable poison, you wouldn't know
>! If you know something is an undetectable poison, you wouldn't want it yourself
>! If you want an undetectable poison, you would make it
>! If you make an undetectable poison, you'll give it to some... |
The murderer has fled the scene, you have a feeling he will try to leave the country. You get access to his credit card records and see that he has recently spent £500 on flights at Getaway Travel Agency. You immediately rush to the shop to inspect their records.
Unfortunately, Getaway is a very old-fashioned Travel... |
You are going through the belongings of your recently deceased uncle and come upon a small wooden box with the following inscription, presumably describing its contents.
Those who take me, won't know me.
Those who know me, won't want me.
Those who want me, will make me.
Those who make me, will giv... |
just a wild guess, i think there is nothing in the box?
Those who take nothing, won't know nothing.
Those who know nothing, won't want nothing.
Those who want nothing, will make nothing.
Those who make nothing, will give nothing away.
i think that's why the box is empty? |
I thought she liked me? |
is it..
>! Heathrow Airport in England ? the word Heath means a wasteland or uncultivated land (the ROW is empty hence it's a HeathRow). |
A party is being held at a local mansion. The host is very rich and his success is because of one thing — his famous recipe for spaghetti!
The only guests that may attend are people who correctly reply to the guard at the door.
Here's where you come in. You and a friend are trying to steal this recipe. You ... |
>!Answer is zero or twelve as it sits directly opposite the clock face of the number used as the question. I guess guard 2's answer could also have been Eighteen? |
A party is being held at a local mansion. The host is very rich and his success is because of one thing — his famous recipe for spaghetti!
The only guests that may attend are people who correctly reply to the guard at the door.
Here's where you come in. You and a friend are trying to steal this recipe. You ... |
This party is so popular!
So just like before, you want the spaghetti recipe yada yada yada...
The first guest arrives, the security guard says "6". The guest goes away to check the answer, but soon returns, saying "3", and is admitted.
The second guest arrives, the security guard looks annoyed and says "1", i... |
Given a as the input (what guard says) and b as output (keyword)
The next guest arrives. The security says "10", the guest replies "2".
a+b=12
a-b=8
12-8=4
The next guest arrives. The security says "8", the guest replies "4".
a+b=12
a-b=4
12-4=8
and so on, you get this table
a ... |
Do you want a stupid answer? I got one that fits perfectly and is almost definitely not what you are looking for.
# The Series #
What do we have here? There is a pattern to be extrapolated; probably several hundred thousand different expressions that would generate the series.
The series
/----------\... |
A party is being held at a local mansion. The host is very rich and his success is because of one thing — his famous recipe for spaghetti!
The only guests that may attend are people who correctly reply to the guard at the door.
Here's where you come in. You and a friend are trying to steal this recipe. You ... |
After pretty sick 12 parties, obviously 13th party occured during "Halloween".
Halloween themed party is being held at a local mansion. The host is very rich and his success is because of one thing ~ his famous recipe for Evil Spaghetti!
The only guests that may attend are people the host knows and trusts, whom ... |
A party is being held at a local mansion. The host is very rich and his success is because of one thing — his famous recipe for spaghetti!
The only guests that may attend are people who correctly reply to the guard at the door.
Here's where you come in. You and a friend are trying to steal this recipe. You ... |
After pretty sick 12 parties, obviously 13th party occured during "Halloween".
Halloween themed party is being held at a local mansion. The host is very rich and his success is because of one thing ~ his famous recipe for Evil Spaghetti!
The only guests that may attend are people the host knows and trusts, whom ... |
This party is so popular!
So just like before, you want the spaghetti recipe yada yada yada...
The first guest arrives, the security guard says "6". The guest goes away to check the answer, but soon returns, saying "3", and is admitted.
The second guest arrives, the security guard looks annoyed and says "1", i... |
This party is so popular!
So just like before, you want the spaghetti recipe yada yada yada...
The first guest arrives, the security guard says "6". The guest goes away to check the answer, but soon returns, saying "3", and is admitted.
The second guest arrives, the security guard looks annoyed and says "1", i... |
"Take her away" commanded the police officer as the two other handcuffed the blonde woman. "Good work detective, i can see why you were awarded being the number one detective. Keep up the great work!". You stood there trying to be mature about it, but deep down you are overwhelmed by the comment and is very happy. You ... |
This should probably be on the math stackexchange. It's a differential equations problem.
The interesting part about the elastic band is that it provides the ant with a fraction of the car's velocity. The fraction varies depending on how far along the elastic the ant has gotten. For instance, at t = 0 when the ant i... |
This party is so popular!
So just like before, you want the spaghetti recipe yada yada yada...
The first guest arrives, the security guard says "6". The guest goes away to check the answer, but soon returns, saying "3", and is admitted.
The second guest arrives, the security guard looks annoyed and says "1", i... |
"Take her away" commanded the police officer as the two other handcuffed the blonde woman. "Good work detective, i can see why you were awarded being the number one detective. Keep up the great work!". You stood there trying to be mature about it, but deep down you are overwhelmed by the comment and is very happy. You ... |
"Take her away" commanded the police officer as the two other handcuffed the blonde woman. "Good work detective, i can see why you were awarded being the number one detective. Keep up the great work!". You stood there trying to be mature about it, but deep down you are overwhelmed by the comment and is very happy. You ... |
After pretty sick 12 parties, obviously 13th party occured during "Halloween".
Halloween themed party is being held at a local mansion. The host is very rich and his success is because of one thing ~ his famous recipe for Evil Spaghetti!
The only guests that may attend are people the host knows and trusts, whom ... |
This party is so popular!
So just like before, you want the spaghetti recipe yada yada yada...
The first guest arrives, the security guard says "6". The guest goes away to check the answer, but soon returns, saying "3", and is admitted.
The second guest arrives, the security guard looks annoyed and says "1", i... |
A party is being held at a local mansion. The host is very rich and his success is because of one thing — his famous recipe for Spaghetti!
The only guests that may attend are people who correctly reply to the guard at the door.
Here's where you come in. You and a friend are trying to steal this recipe. You sneak ... |
You're arrested
>! Drug Addict. How he did it? Well he's drug addict. Obviously he have needle. And he wear bandana, recall that victim got covered by cloth. Motive is revenge to police, since his friends got arrested. And noticed that he said "Don't need to poppin me". That's a slip. How did he know that his victim... |
The Spaghetti dude just can't get enough of his parties... so there's yet another chance for you and your mate to steal the recipe.
The first guest arrives. The security says "3", and the guest replies "2".
The second guest arrives. The security says "4", and the guest replies "3".
The third guest arrives. The... |
Wow. It's all about spaghetti with you folks huh. Well plot twist! He has a new get-rich recipe for pie!
As usual you hide and listen the the passwords, this time to you decide to make a chart:
> "10" -> "5"
> "6" -> "3"
At this point your friend has had enough. He's been taken by security, trampled by el... |
This is part of a series which I'll be continuing if this goes down well enough. If you have any feedback on the puzzle (too hard, too easy, not clear enough, etc) I'd appreciate it so that future puzzles can be better :-)
---
You wake up and log on to your computer. You log on to Puzzling.SE, browse some puzzles... |
My response is 4.
>! The formula I used is 2+2f where f is the number of factors in the prime factorization of x.
For 2:
>! The prime factors in 2 are: 2. 2+(2*1) = 4
For 3:
>! The prime factors in 3 are: 3. 2+(2*1) = 4
For 4:
>! The prime factors in 4 are: 2*2. 2+(2*2) = 6.
For 5:
>! The prime fact... |
Are you familiar with Raymond Smullyan's book [The Chess Mysteries of Sherlock Holmes][1]? I don't know if it contains exactly the kind of puzzle you're looking for. There are different kinds in the book, and most that I remember are trying to reconstruct the moves in a game from an unlikely or absurd position. Some... |
Do you want a stupid answer? I got one that fits perfectly and is almost definitely not what you are looking for.
# The Series #
What do we have here? There is a pattern to be extrapolated; probably several hundred thousand different expressions that would generate the series.
The series
/----------\... |
A party is being held at a local mansion. The host is very rich and his success is because of one thing — his famous recipe for Spaghetti!
The only guests that may attend are people who correctly reply to the guard at the door.
Here's where you come in. You and a friend are trying to steal this recipe. You sneak ... |
A party is being held at a local mansion. The host is very rich and his success is because of one thing — his famous recipe for Spaghetti! Tonight he is trying a new variation on his signature creation which is expected to be a big hit in his restaurants all over town: Spaghetti Pie! However, after several successful... |
I have a black box that contains 4 balls. 3 are red and 1 is blue.
I remove two from the box without seeing them.
I look at one of them, it is red.
What is the probability that the other one is red? |
This is how I see it
Basically you have 4 balls. What is the probability that you will pick 2 red balls out of the 4?
>! There are only 6 ways to choose 2 balls out of the 4. And only 3 of those will give you both red balls.
So my answer is:
>! 3/6 = 1/2
|
It's equivalent to taking one of the balls, then looking at it, then taking out another and looking at *it*. 66% is my guess.
**Edit**: I am going to risk ending up stupid and complain: why 50%? Maybe the combinatorics data ends up showing that but to me it doesn't make any sense. I'm going to stick with 66% due to ... |
The answer is slightly trickier than you might think at first - it has to do with a quirk in the calendar we currently use, the [Gregorian Calendar](https://en.wikipedia.org/wiki/Gregorian_calendar#Adoption).
The Gregorian Calendar was instated by Pope Gregory (hence the name) in 1582 to account for a slight dispari... |
A party is being held at a local mansion. The host is very rich and his success is because of one thing — his famous recipe for Spaghetti!
The only guests that may attend are people who correctly reply to the guard at the door.
Here's where you come in. You and a friend are trying to steal this recipe. You sneak ... |
So, you got in to the party? Easy stuff! The number sequences were silly and you walked in and out multiple times. Now what? |
A neanderthal walks into a room. Inside are a man and a woman with large sticks, surrounded by dozens of unintelligible glass disks and squares. The man comments he can see the ocean under the clouds. Why? |
This is how I see it
Basically you have 4 balls. What is the probability that you will pick 2 red balls out of the 4?
>! There are only 6 ways to choose 2 balls out of the 4. And only 3 of those will give you both red balls.
So my answer is:
>! 3/6 = 1/2
**EDIT:**
Since @w0lf posted the clarification I a... |
A neanderthal walks into a room. Inside are a man and a woman with large sticks, surrounded by dozens of unintelligible glass discs and squares. The man comments he can see the ocean under the clouds. Why? |
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