If two's company, and three's a crowd, then whats four and five ?

I am an odd number. Take away a letter and I become even. What number am I?

You were playing ping pong with your friend. Suddenly the ball fell into a narrow metal pipe that was imbedded in the concrete surface of the floor one foot deep. Now you don't have any other ball and you desperately want to take it out and play. You and your friend have your shoelaces, your tennis paddle and a plastic water bottle. However, the bottle cannot fit into the pipe.

How will you take the ball out?

I am a white box having no key or lid.
Yet there is a golden treasure inside it.

What Am I?

I travel all around the world but always stay in the corner. What am I?

Can you make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic operator?

Two fathers and two sons decided to go to a shop and buy some sweets upon reaching. Each of them bought 1 kg of sweet. All of them returned home after some time and found out that they had 3kg of sweets with them.

They did not eat the sweets in the way, nor threw or lose anything. Then, how can this be possible?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see? What is it?

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?

How can you write nineteen in a manner that if we take out one, it becomes twenty?