The Puzzle Thread

[leonid]

ITT post puzzles/riddles and solve them

I'll start with this one

[Nyokou]

41 or 11?

[MracY]

I see you went for the shifting x*y+z / x*y-z pattern.

Unfortunately this doesn't fit the third triangle. I might be missing something obvious, however.

Although if you choose to go along with that pattern, there are some other low-hanging solutions that might be valid.

[noname219]

x = highest number
y = middle number
z = lowest number

x*y - z*z

Answer is 29

[Hakulyte]

x = 6
y = 5
z = 1

Too bad, didn't solve it using simplex, just guessed it.

[Evnoir]

Originally Posted by Hakulyte

x = 6
y = 5
z = 1

Too bad, didn't solve it using simplex, just guessed it.

noname219's post was the solution, not a new puzzle.

I was thinking too deep into the puzzle and thought it had something to do with volume of a prism


Edit: Here's a really common riddle.

Shown above are four men buried up to their necks in the ground. They cannot move, so they can only look forward. Between A and B is a brick wall which cannot be seen through.
They all know that between them they are wearing four hats--two black and two white--but they do not know what color they are wearing. Each of them know where the other three men are buried.
In order to avoid being shot, one of them must call out to the executioner the color of their hat. If they get it wrong, everyone will be shot. They are not allowed to talk to each other and have 10 minutes to fathom it out.
After one minute, one of them calls out.
Question: Which one of them calls out? Why is he 100% certain of the color of his hat?

[One Winged Angel]

Assuming D can see both B and C, C knows his hat color on the basis that D hasn't claimed his own as black from seeing two whites in front of him.

If D can only see C, then idk.

[Litodude]

oops i guess d can see c and b

edit- also the thing about the aforementioned riddle: assume each individual has high cognitive and intellectual sense and that none of themselves are retarded

[Litodude]

a man walks into a bar. how expensive was his medical bill in america?

[YoshL]

no, owa got the answer i'm p-sure. have heard that riddle before.

[One Winged Angel]

if D can only see C, C can only see B, and A and B can't see shit, I'm pretty sure they all die unless they guess correctly

[Litodude]

nope, wrong.

[leonid]

Originally Posted by Litodude

nope, wrong.

A & B can only see their respective sides of the wall, C can see B, and D can see B & C.

says on the puzzle page that had the image

[One Winged Angel]

I'm curious, is there another solution or are you just being lito

leonid post more number shit, noname sniped too quickly

[leonid]

If you choose one among the following, what is the probability that you get the correct answer?

A. 25%
B. 50%
C. 60%
D. 25%

--------

A well known facebook prank, but it actually has a solution

[Evnoir]

Probably 0% since the answer itself doesn't have to be confined to those 4 choices.
Unless I'm interpreting something wrong.

[j-rodd123]

ya that's what I was thinking as well, if it's not 0% then im curious to see what the answer is

[leonid]

Provide simple mathematical explanation for bonus points

[Zageron]

The answer is in this post, be careful if you want to solve it yourself.

A can't see anything. Doesn't speak.
B can't see anything, doesn't speak.
C Can only see a white hat, doesn't know.
D Can see both white and black, so doesn't speak.

Because D doesn't speak, C assumes that since B's hat is white, his is black.

Boom. (Don't forget to use all of the information. :P)

[Evnoir]

Can't do math l0l
I'll add onto this post, but for now, here's some rambling.

Even if the choices were different (e.g. a) 10% b) 20% c) 30% d) 40%), it wouldn't change the question. Unless the correct answer is one of the choices, there's no way to pick the right answer from the given choices. In this case, assuming uniform distribution, the answers will be weighted with different probabilities. Because of this, the answer changes depending on the which choice you pick. I'm trying to think of a mathematical approach but nothing's coming up at the moment.

hint pls