It belongs to you, but other people use it more than you do. What is it?

A rubber ball keeps on bouncing back to 2/3 of the height from which it is dropped. Can you calculate the fraction of its original height that the ball will bounce after it is dropped and it has bounced four times without any hindrance ?

If 1+9+8=1, what is 2+8+9?

How do you go from 98 to 720 using just one letter?

If,

A + B = C
D - C = A
E - B = C

Based on the above equations, find out the answer for:

D + F = ?

There was a blind man. He had four socks in his drawer either black or white. He opened it and took out two socks. Now the probability that it was a pair of white socks is 1/2.

Can you find out the probability that he had taken out a pair of black socks ?

What number do you get when you multiply all of the numbers on a telephone's number pad?

John left on a horse on Thursday , was gone for two days, and came back on Thursday after completing his work. How did that happen?

Count the number of triangles in the given picture.

I taste better than I can smell. Who am I?