What does the below rebus riddle means?

A man is found dead with a knife in his back When the investigation is done. A chair lays beside him and the forensic team finds moisture around the body.

If he committed suicide, how did he do it?

Why is the longest human nose just 11 inches?

They are three errirs in this question. Can you find them?

Who is that with a neck and no head, two arms and no hands? What is it?

You find yourself in a strange place guarded by two guards.One of the guard always say truth while other always lies.You don't know the identity of the two.You can ask only one question to go out from there. What should you ask?

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

Can you find the dog hidden in a group of pandas?

I have a hole in my back and legs I lack.
I live where I can’t breathe and I eat without teeth.
What am I?

Twice ten are six of us,

Six are but three of us,

Nine are but four of us;

What can we possibly be?

Would you know more of us?

Twelve are but six of us,

Five are but four, do you see?

What are we?