A boy was locked in a room by some robbers. All that is in the room is a piano, a calendar, and a bed. The room is locked from the outside. What does he eat, drink, and how does he escape and get out?

A farmer went to a market and bought a wolf, a goat, and a cabbage. On his way home, the farmer came to the bank of a river and rented a boat. But crossing the river by boat, the farmer could carry only himself and a single one of his purchases: the wolf, the goat, or the cabbage. If left unattended together, the wolf would eat the goat, or the goat would eat the cabbage. The farmer’s challenge was to carry himself and his purchases to the far bank of the river, leaving each purchase intact. How did he do it?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?

How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

A man was just doing his job when his suit was torn. Why did he die three minutes later?

81 x 9 = 801. What must you do to make the this equation true?

He runs but never walks. Murmurs, but never talks. Has a bed, but never sleeps. And has a mouth, but never eats?

Below, you will find the mathematical proof that 10 equals 9.99999?. But is that possible or there is something wrong about it? Can you find the error?

x = 9.999999...
10x = 99.999999...
10x - x = 90
9x = 90
x = 10

There are 3 apples in the basket and you take away 2. How many apples do you have now?