If you say my name, I will no longer exist. What am I?

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

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

I make two people out of one. What am I?

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

What Am I?

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

Twenty frogs are sitting on a log floating on the surface of a river. Two of them decide to jump off into the water.

How many frogs are there on the log at this moment?

I have no life, but I can die. What am I?

I am the fastest animal but cannot climb the tree. What am I?

John’s parents have three sons: Snap, Crackle, and what’s the name of the third son?