What is the below Rebus indicate?

The dirtier I get, the whiter I look. Who am I?

You can see it everyday, But cannot touch it at will. What is it?

What does this rebus mean?

O
N
C
E
TIME

I am a number I am not an odd number I am higher than 90 I am not higher than 100 If you subtract me from 100, you get nothing. What number am I?

A rain drop fell from one leaf to another leaf and lost 1/4th of its volume. It then fell to another leaf and lost 1/5th of the volume. It again fell on another leaf and lost 1/5th of the volume.



This process kept repeating till it fell on the last leaf losing 1/75th of its volume.



Can you calculate the total percentage of loss from the initial volume when the drop has fallen to the last leaf accurate up to two decimal places?

You board a train. The train will have to enter a tunnel soon. You are claustrophobic. Which place is the best for you to sit?

See the given image carefully. What you have to do is move the blue checkers in the position of the black checkers and vice versa. You are only allowed to move the checker to an adjacent empty space. Do it in the least possible moves.

This is a picture puzzle. You have to guess the name of the movie that can be related to the picture.

Why is a river so rich ?