A woman lives in a Tall building thirty-six floors high and served by several elevators which stop at each floor going up and down. Each morning she leaves her apartment and goes to one of the elevators. Whichever one she takes is three times more likely to be going up than down. Why?

Can you count the number of triangles inside a triangle?

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

There is a place where if I stand up straight, I will still be considered sideways.

Can you find out a way through which you can make five squares out of the given figure by moving just six match sticks?

81 x 9 = 801. What must you do to make the this equation true?

On a charity event in Russia, Murray beat Djokovic by winning six games and losing three games.
Note: There is a total of 5 service breaks(one who serve lost the game).
Who served first, Djokovic or Murray?

Can you find the missing number in the third row?
35 20 14
27 12 18
5 2 ?

You have two strings whose only known property is that when you light one end of either string it takes exactly one hour to burn. The rate at which the strings will burn is completely random and each string is different.

How do you measure 45 minutes?

I noticed one of the words in the oxford dictionary is spelled incorrectly. What about you?