How can you make number one disappear by adding something to it?

Why is the Hole below a Lock?

Can you find a seven digit number which describes itself. The first digit is the number of zeros in the number. The second digit is the number of ones in the number, etc. For example, in the number 21200, there are 2 zeros, 1 one, 2 twos, 0 threes and 0 fours.

They are the five precious gems of an everyday sort and all can be found on a Tennis Court. Who are they?

Solve the puzzle by telling what does below picture means.

A bomb exploded in a room full of married couples and no one died. How?

In a football game, Christina defeated Teresa by 2 - 0 but no man from either side scored. How can this be possible?

Cristina was born in 1888. She just had her 30th birthday today how did that happen?

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

Two boys wish to cross a river. The only way to get to the other side is by boat, but that boat can only take one boy at a time. The boat cannot return on its own, there are no ropes or similar tricks, yet both boys manage to cross using the boat.

How?