What does below rebus means ?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see? What is it?

Can you start the fire using two pieces of wood?

Why is Saturday stronger than Monday?

Which alphabet letter is a question?

What can go up a chimney down, but can’t go down a chimney up?

Prove that twice of ten is the same as twice of eleven.

The barber of Town shaves all men living in the town. No man living in the town is allowed to shave himself. The barber lives in that town. Who then shaves the barber of the town?

A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.

A woman shoots her husband.

Then she holds him under water for over 5 minutes.

Finally, she hangs him.

But 5 minutes later they both go out together and enjoy a wonderful dinner together.

How can this be?