What number when divided in half becomes zero?

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

What has to be broken before you can use it?

If 21x = 79x, what is the value of x?

Complete the table series riddle by finding the number that can replace "??".

I am quite hot but become too cold if you remove the first two letters. What am I?

If a wheel has 54 spokes, how many spaces are there between the spokes?

Consider this: Arnold Schwarzenegger has a big one. Michael J. Fox has a small one. Prince doesn’t have one. The Pope has one but never uses it. Bill Clinton has one and uses it all the time. What is it?

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?

An octopus has 8 legs. A hippogriff has 6 legs and 2 pairs of wings. A sphinx has 6 legs and one pair of wings. Now we have all 3 kinds and a total of 18 insects in a cage. We have a total of 118 legs and 20 pairs of wings. How many insects do we have of each kind?