2, 3, 5, 9, 17, _ What is the next number in the sequence?

You are given four tennis balls and asked to arrange those balls in a manner that the distance between each one of them is exactly equal. How will you do it?

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

Find the missing letter in the last circle logically in the given below picture.

I am five letter word that is under you.
If you remove my 1st letter, then I am over you.
If you remove my 1st and 2nd letters then I am all around you.

Who am I?

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?

A man walked into a pub and went straight towards the Barman. He asked for a dirty martini from the Barman. The Barman thought something and then pulled out a pistol from his drawer and aimed it directly at the man. Why did he do that?

A plane crashed between the border of Mexico and America. Where do you bury the survivors?

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

A man is shown a portrait painting. He looks closely, then tells, “Brothers and sisters have I none, but that man’s father is my father’s son!” Who is the man in the portrait?