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

Why Aeroplane windows are round?

What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C

It is a six-letter word.
The first four letters are me.
The second and last letters are the same.
The fourth second and last letter is payment.

Who is it?

What happened when the wheel was invented?

Using Only Five 5's and any mathematical operator make sum as 37

You need to pick one entry from pot A and one from pot B to have a perfect match. Can you do it?

If you were to put a coin into an empty bottle and then insert a cork into the neck, how could you remove the coin without taking out the cork or breaking the bottle?

What does Alexander the Great and Winnie the Pooh have in common?

Which point will the car reach to go out?