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?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

Can you find out which number multiplied by itself will give the output as 12345678987654321?

You have a square. What you have to do is cut and reassemble the square such that you create a Red Cross sign that has the same volume as that of the square.

What part of Turkey has the most feathers?

Can you find the odd number in the following?

2716, 4135, 5321 and 7145

What is the centre of gravity?

On a magical land of Mexico , all the animal in the land are rational.

There are 10 tigers and one goat.
Tiger can eat goat but since it's a magical land , the tiger who eats the goat , turns into goat and then can be eaten by the remaining tiger(s).

If we leave them for some time then how many goat and tiger will be there , when we come back ?

How is a fly different from a mosquito?

When my father was 31 I was 8. Now he is twice as old as me. How old am I?