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?

I never was there, I am always to be.
You have never ever seen me, not ever you will.
Yet I am the confidence of everyone.

Who Am I?

How many triangles are there on the puzzle below?

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

Which of the below owl is odd one out?

Different lights make me strange by changing me into different sizes. What am I?

There is a family that live in a round house. The two parents go out for a movie and leave a babysitter to watch their son. They come back and the kid was not there. Some one kidnapped him. The maid said she was cleaning in a corner. The cook said he was making pizza. The babysitter said she was getting a board game. Who kidnapped him.

A man was just doing his job when his suit was torn. Why did he die three minutes later?

Which is Odd One Out and why?

4377

3954

9862

8454

9831

What does man love more than life, and hate more than death or mortal strife; that which satisfied men want; the poor have, and the rich require; the miser spends, the spendthrift saves, and all men carry to their graves?