A boy collects white seashells from the sea and brings them home every night. When he has enough of them, he decides to sell them to a trader.

The trader is ready to buy the shells and he asks the boy about the quantity. At this, the boy starts calculating. He has a giant box that contains 3 mini boxes. Two of them have another mini box inside. If the giant box can hold 50 shells, how many brown shells can he sell to the trader?

Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

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

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

Can you find a seven digit number which describes itself. The first digit is the number of zeros in the number. The second digit is the number of ones in the number, etc. For example, in the number 21200, there are 2 zeros, 1 one, 2 twos, 0 threes and 0 fours.

What comes
Once in a Year
Twice in a Month
4 times in a Week
6 times in a Day

A pond had 60 fish, out of which, all but 20 died.
How many fishes are now present in that pond?

A very interesting trivia question for all.

Why do men's shirts have their buttons on the right side and women's have buttons on the left-hand side?

If it took eight men ten hours to build a wall, how long would it take four men to build it?

How many times do a clock's hands overlap in a day ?