Name a key which is hardest to turn.

My cousin lives in one story house in Antarctica. His house is made the of-of sandstone. what is the color of stairs?

The more you take me, the more you leave me behind.
Who Am I?

what's the probability of getting a king or a queen from a pack of 52 cards?

A boy and his father are caught in a traffic accident, and the father dies. Immediately the boy is rushed to a hospital, suffering from injuries. But the attending surgeon at the hospital, upon seeing the boy, says 'I cannot operate. This boy is my son.' How is this situation explained?

You are on a Boat in the mid of a river. You have two cigarettes with you. One of these two you have to light, how will you light the cigarette?

Can you solve the tricky chess rebus puzzle below by ciphering the hidden meaning?

I am a three digit number.
My tens digit is five more than my ones digit.
My hundreds digit is eight less than my tens digit.
What number am I?

My first is in chocolate but not in ham. My second is in cake and also in jam. My third at tea time is easily found. Altogether, this is a friend who is often around. What is it?

A bomb exploded in a room full of married couples and no one died. How?