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 ?

You need to remove two matchsticks to make the below equation true. Can you do it ?

There are two words one resembles the "state of rest" and the other is related to "writing/reading material".

Can you name these two words which also sound similar?

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

What can go up a chimney down, but can’t go down a chimney up?

how come the second man dies?

13 decks of cards have been mixed. What is the minimum number of cards that must be taken out from the above-mixed cards to guarantee at least one 'four of a kind?

What word begins and ends with an E, but has only one letter?

One night, a man runs away from home. He turns left and keeps running. After some time he turns left again and keeps running. Later, he turns left one more time and runs back home—but when he gets home, he finds a man in a mask. Who was the man in the mask?

You need to move three matchsticks to form three squares. Can you do it?