I have branches, but no fruit, trunk or leaves. What am I?

Nine marbles are arranged in the image below. Can you slide two marbles to form a square?

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?

Can you find the mistake in the below statement?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

The Little ant seems to be always confused. Do you know why?

In the attached figure, you can see a chessboard and two rooks placed on the chess board. What you have to find is the number of squares that do not contain the rooks. How many are there?

What kind of tree can you carry in your hand?

Can you find the missing letter in the sequence?
S - T - I - L - ? - T - F - Y - C

I am a normal creature, but I have five hands. I can even have more but even then I will be considered normal.

Who am I?