I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

During an experiment, a guy throws a bouncy ball from a 100 feet tall building. The ball has a specific characteristic. Every time it hits the ground, it bounces up halfway.

How many bounces do you think the ball will make before it comes to a stop ?

How high do you have to count before you use the letter “a” in the English spelling of the whole number?

Can you think of any three-dimensional shape that comprises of exactly two surfaces?

What does below chemistry rebus means?

People make me, save me, change me, raise me. What am I?

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 ?

Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?

Once while in his court, King Akbar asked Birbal to write something on a wall that makes one sad when read in good times and makes one happy when read in sad times.

He took only a few moment and wrote something that fit the requirements. What did he write?