What has to be broken before you can use it?

Take away my first letter, then take away my second letter. Then take away the rest of my letters, yet I remain the same. What am I?

The horse jumps over the king.
Strangely there is absolutely no scratch on him.

Can anyone explain, how is this possible?

What 5-letter word typed in all capital letters can be read the same upside down?

If you say my name, I will no longer exist. What am I?

What brings you down but never up?

When we see 2 but call 10?

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

Two friends decide to get together; so they start riding bikes towards each other. They plan to meet halfway. Each is riding at 6 MPH. They live 36 miles apart. One of them has a pet carrier pigeon and it starts flying the instant the friends start traveling. The pigeon flies back and forth at 18 MPH between the 2 friends until the friends meet.

How many miles does the pigeon travel?

There are 3 apples in the basket and you take away 2. How many apples do you have now?