A woman lives in a skyscraper thirty-six floors high and is 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?

Two friends were betting. One said to the other, "The coin will be flipped twenty times and each time the coin lands on the head, I will give you $2 and each time it lands on the tale, you will give me $3." After flipping the coin twenty times not a single penny was exchanged among them.

How many times did the coin land on heads?

In the image below, you can see two glasses and two matchsticks.You need to move four matchsticks in such a manner that the crosses come inside the glasses. Note: you cannot move the crossed.

In the image given, you can find several triangles. Can you count them all?

Can you calculate the probability of getting a sum of six when a dice is thrown twice?

What is harder to catch the faster you run?

What are the next two letters in the following series and why?
W A T N T L I T F S _ _

*Hint: Check Puzzle Title

Teacher ask the student

'Why are you standing on that chair in music class ?'.

what did student replied ?

Count the number of lines in the image below ?

Can you place six X (crosses) in below board without making three in a row in any way ?