what does this below rebus represent identXQQQQQME

I am not a bull but I have horns.
I am not an ass but I have a pack saddle.
Wherever I go, I leave silver behind me.

Who am I?

What number divided by 4 is the same as that number minus 4?

Astrology starts with the alphabet A, Biology starts with B, Psychology with P and Limnology with L.

Can you find an "ology" that begins with a P?

No one wants to have it, but if one got it, he does not want to lose it. What is It?

Consider all the numbers between 1 and 1 million. Among all these numbers, there is something very special about the number 8 and the number 2202. What is it?

Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?

Two-person want to cross a river. Only one boat is present on the riverside that can carry only one person at a time.

However, they still manage to cross the river. How is it possible?

Solve the puzzle by telling what does below picture means.

Who has married many women but was never married?