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

Today, I celebrated my 32nd birthday but I was born in 1972.
How is this possible?

A father's child, a mother's child, yet no one's son.

Who am I?

If 1+9+8=1, what is 2+8+9?

Spelt forwards I’m what you do every day, spelled backwards I’m something you hate. What am I?

What has many keys but can’t open a single lock?

I don't get anymore wetter, no matter how much rain falls on me.

Find the hidden tiger in the given optical illusion ?

Rearrange the letters in "new door" to make one word.

John killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?