What is always in front of you but can’t be seen?

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?

Once upon a time, there was a castle on a square island. The entire island was surrounded by a 14m wide trench. The Romans had wanted to invade the castle and had brought a few wooden planks along with them to facilitate themselves in crossing the moat. The planks were however found to be only 13m long.

The Romans still managed to cross the trench. How did they do it?

Who can jump higher than a Mountain?

Spot what is wrong here in below Picture?

I have feet, but no legs. Which animal Am I?

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

A man is found dead with a knife in his back When the investigation is done. A chair lays beside him and the forensic team finds moisture around the body.

If he committed suicide, how did he do it?

What is the Surname of Barbie Doll?

Can you make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic operator?