What three numbers, none of which is zero, give the same result whether they’re added or multiplied?

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

By what process could you make a 'Tea-Table' into food?

I am taken from a mine and shut up in a wooden case, from which I am never released, and yet I am used by almost every person. What am I?

A man is lying dead in a field where no one is around. His head is split open and his legs are disfigured. Near to him, there is an unopened package. No living organism can be found anywhere at the crime scene.

How did he die?

John is asked to stand behind Jacob and Jacob is asked to stand behind John. Both of them feel confused about it and don't know what to do?

But it is quite possible, do you know how?

John was so frustrated to be the suspect of being a sleeper terrorist that he shoot himself right between the eyes with a revolver in his toilet. The revolver and the bullets were accurate. Minutes later John walks out of the toilet unharmed.
How can this be possible?

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

That attorney is my brother, testified the accountant.

But the attorney testified he didn't have a brother.

Who is lying?

Identify the hidden meaning behind this picture?