Oray
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  • Ankara, Turkey
What color is the drummer's hair?
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51 votes

White is not So White's hair can only be The rest is easy since we know what White hair color is Black's hair color is and Redhead's hair color is

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What's wrong with this picture?
51 votes

There are lots of problems with the image. To illustrate:

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What is the smallest set of letters that can spell any integer?
43 votes

... -3: MINUS ONE MINUS ONE MINUS ONE -2: MINUS ONE MINUS ONE -1: MINUS ONE 0: ONE MINUS ONE 1: ONE 2: ONE MINUS MINUS ONE 3: ONE MINUS MINUS ONE MINUS MINUS ONE ... two letters fewer since ...

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Who stole the flying car in Hogwarts?
36 votes

This results

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No broken eggs puzzle
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28 votes

This can be easily solved starting from the third guy since no egg is left after he took the half of the egg. Third guy: Second guy: First guy:

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These four numbers make 25
25 votes

by putting all conditions except "Large and small are different by 4" as letters below should be these numbers. so we can conclude that First condition: Second condition: and Last condition: In ...

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Google's 20th Anniversary: Make 20 using 6 0 0 6 1 3
Accepted answer
23 votes

How about another one last one

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The 10,958 Problem
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22 votes

I wrote a program to solve all possible conditions including everything. The code is running for some days now and I have found lots of close results. According to the benchmark, it will take a couple ...

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Princesses covering an 8x8 chess board
Accepted answer
21 votes

Here is the optimal answer with Shown as knights;

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Use 0, 5, 7 and 1 to make 89
Accepted answer
17 votes

Here is lateral thinking answer: then Here is the actual answer: How did I find?

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Lets see how smart Puzzling' stack users really are!
Accepted answer
17 votes

This is the original drawn of this question: You will easily notice that AFE angle is 20. And AFE and FCA triangles are isosceles triangle: Moreover, if you draw a line through point E as 20 degrees ...

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Find a straight tunnel
17 votes

4.8179 km I have made a little improvement on @squeamish ossifrage answer where it just requires a little optimization on it, resulting; with the minimization of the equation. First of all, using ...

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Slicing a rectangle
17 votes

First of all, by a simple geometry principle: $\triangle CED$ and $\triangle AED$ have the same base $|ED|$ and the area ratio between $\triangle CEF$ and $\triangle CFD$ has to be the same as the ...

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Size of a square in a square
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16 votes

Here is the answer: More is coming! Here is our original diagram completed with for sure later; the length $|DE|$ is our $x$ and let's put some specific angle that we are going to work with in our ...

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10 9 8 7 6 5 4 3 2 1 = 2017
15 votes

One can even find $2017$ by using only 5 numbers given in the question without changing the order as below: Here are the actual answers for the question:

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Biggest army on a chessboard
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14 votes

Here is the most probable optimal solution with some extra modification of previous answers: The score is 1.3348. Here is the brute Force Code written by @fireflame241 confirming this is actually ...

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How many consecutive integers can you make using only four digits?
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14 votes

Here is my result for $1,4,6,7$ from $1$ to $53$. $1^{4-6-7}=1$ $1^4-6+7=2$ $(1-4)/(6-7)=3$ $1+4+6-7=4$ $1-4/(6-7)=5$ $1+4-6+7=6$ $(1^{4})^{6}*7=7$ $1^{4-6}+7=8$ ...

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Ten squares inside a rectangle
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13 votes

Here is my attempt, and it is probably optimum if I didn't miss something: It is the idea is simply; In other words,

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The speeding train
13 votes

because,

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Toy boat on a string
13 votes

It has to be (mathematically) This is our boat and geometry of it. First of all we know that $x-y=1$ since the Little Johhny pulled 1 yard the boat and he is 1 meter above from the sea level. $b^...

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Color this map using only 4 colors (easy)
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11 votes

Here is the answer: This was pretty easy though.

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Number puzzles - What goes instead of "?"
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11 votes

Pretty simple to be honest, or So the answer will be;

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Lethal Solution
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11 votes

Let's call our glasses $1,2,3$ and $4$. We are trying to find out which glass is poisoned, so we don't need the poisoned water! Initially we have 4 glass of waters as shown below; Pour $1$ away and ...

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Neighboring sums 4x4 game
10 votes

Here is my answer: as here the order is as below

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Prime to Prime Sequel
Accepted answer
10 votes

Here is the answer: $2=2$ $3=3$ $5=2+3$ $7=\frac{43-3}{2}-13$ $11=43-2\cdot(13+3)$ $13=13$ $17=43-13\cdot2$ $19=13+3\cdot2$ $23=43-2\cdot(13-3)$ $29=43-...

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How many cookies does someone need to grab to be certain to obtain a flavor?
10 votes

Originally there are; 10 S, 6 V and 5C For the first case where he wants to have 7 S, 5 V and , 4 C. (so we dont want to have 3S, 1V and 1C) In the worst case scenario; so I do not want to ...

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Spider and fly on a cube
10 votes

This is not a proof but basic intuition; The value of $d$ should be (considering they are wise and choose not random points but the best possible point where they have the advantage) where it makes ...

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$109088$ as sum of $3$ palindromes
Accepted answer
10 votes

Here is the answer: The reason is And The rest is

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Seven cards in a bowler hat
10 votes

The player has to pick at least $6$ cards whatever number on the card is at the beginning since the sum of biggest numbers does not exceed $124$ until $6$ cards are picked. If the player picks $4$ or ...

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Ten girls around a table
10 votes

The answer is I have used simple matrix multiplication while solving the problem; Let say who said 1 is A, 2 is B, 3 is C, 4 is B ... J said 10; $\frac{J+B}{2}=1 \ for \ A$ an so on; \begin{...

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