What goes up but never comes down?

Can you name an animal whose killing cannot be performed without spilling your own blood?

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?

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

I am five letter word that is under you.
If you remove my 1st letter, then I am over you.
If you remove my 1st and 2nd letters then I am all around you.

Who am I?

Can you name four days which start with the letter 'T'?

A prisoner is told: "If you tell a lie, we will hang you and if you tell the truth, we will shoot you." What did the prisoner say to save himself?

How many bananas can you eat if your stomach is empty?

Can you find out the next digit in the following series ?

0, 0, 1, 3, 2, 6, 3, 9, 4, 12, 5, ?

I have no life, but I can die. What am I?