I am the black child of a white father, a wingless bird, flying even to the clouds of heaven. I give birth to tears of mourning in pupils that meet me, even though there is no cause for grief, and at once on my birth, I am dissolved into air. What am I?

How can you leave a room with two legs and return with six legs?

Can you calculate the probability of getting a sum of six when a dice is thrown twice?

John was piloting a plane behind a car but was never able to overtake it. Why?

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?

What kind of storm is always in a rush?

Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

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

My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?

Forwards I am heavy, backward I am not. What am I?