How many people must be gathered together in a room, before you can be certain that there is a greater than 50/50 chance that at least two of them have the same birthday?

You need to remove two matchsticks to make the below equation true. Can you do it ?

It has five wheels, though often think four, You cannot use it without that one more, You can put things in it, you can strap things on top, You can't find it in the market, but you can still go shop. What is it?

A girl has as many brothers as sisters, but each brother has only half as many brothers as sisters. How many brothers and sisters are there in the family?

Which country gets ill every time?

1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10

John was gifted a new Hayabusa. He drove x miles at 55mph. Then he drove x+20 miles at 40mps. He drove his bike for 100 minutes. How much distance did he travel?

I have an eye but still cannot see.

Who am I?

What makes this number unique: 8,549,176,320?

81 x 9 = 801. What must you do to make the this equation true?