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

Why is it very easy to weigh a fish?

You need to climb ten stairs. At every stair, you can either take one step up or you can jump two steps up.

In how many different ways you can climb 10 stairs?

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

Give it food and it will live; give it water and it will die.

When can we add 2 to 11 and get 1 as the correct answer?

I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?

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?

Daniel walks into a movie theatre. While in the movie, he suddenly smiles delightfully. About a couple of minutes later, he seems shocked. He walks out of the theatre, goes to a bridge and jumps over the edge killing himself.

Why did he do it?

Note: Think Lateral

I die but do not live. What am I?