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?

why number 8549176320 is one of a kind?

John and Jacob are twin brothers. One of them is a liar whereas the other one is a truth-teller.

I called their home number and one of them picked up.
I asked. 'Does John lie?' The person replied with a yes.

Whom did I talk with, John or Jacob?

How many cubic feet of dirt are in a hole of one foot deep, three feet long, and two feet wide?

Can you find a number that lies one third of the distance between 1/3 and 2/3?

In the picture given below, can you find out which digit will take place of the question mark?

What does it mean?

There is a shop where written:
Buy 1 for $1
10 for $2
100 for $3
I needed 999 and still only paid $3. How could this be financially viable for the shop-keeper?

Double it and multiply it by 4. Then divide it by 8 and you’ll have it once more. What number is it?

Which alphabet letter is a question?