What is the coolest letter in the alphabet?

What is so fragile that saying its name breaks it?

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?

The teacher told the student that if he told a lie then he will be expelled from school and if he told the truth then he still is expelled from school.

What can a student say to prevent his being expelled from school?

What does this rebus riddle means ?

How could a baby fall out of a twenty-story building onto the ground and live?

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

A famous swimmer can swim downstream in a lake in exactly 40 minutes with the lake current.
He can swim upstream in that lake in exactly 60 minutes against the lake current.
The length of the lake is 2 km.

How long he can cover the distance of one side at a still lake with no current?

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 shepherd had 18 sheep, out of which, all but ten died.

Can you tell us how many sheep was he left with?