Why are all black people so quick ?

It's a 7-letter word.
If we remove 1 letter from it, it remains the same.
If we remove 2 letters from it, it remains the same.
If we remove 3 letters from it, it remains the same.
If we remove all the letters from it, still it remains the same.
What is it?

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

When does a USA Potato change its nationality?

Most people think of me as money. But when they find me in the water, they won’t get any money out of me. What am I?

When we see 2 but call 10?

Solve this tricky question. You are trapped in a forest. With you, you have a gun preloaded with two bullets in it. In front of you, there is a tiger, a leopard and a jaguar.

How do you survive?

The answer I give is yes, but what I mean is no. What was the question?

Which city is three-fifths chick two third cat and 50% goat?

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