Solve the following series:
AZ, GT, MN, __, YB

I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?

The more it dries, the wetter it becomes. Can you tell what it is?

If you’ve got me, you want to share me; if you share me, you haven’t kept me. What am I?

Most people think of me as money. But when they find me in the water, they won’t get any money out of me. What am I?

A girl is twice as old as her brother and half as old as her father. In 50 years, her brother will be half as old as his father. How old is the daughter now?

I taste better than I can smell. Who am I?

You are confined in a room and given two metal rods. Out of these two rods, one is magnet and the other is the iron rod. They look starkly similar. You don't have any other metal object in the room.

How will you decide which one of those is magnet?

How can one talk without saying a single word?

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?