A Scientist was fifty years old in the year 2000 but he was forty years old in the year 2010. How can this be possible?

PS: It has a logical answer.

What can you see in the middle of March and April that you can never see in any other month?

What Time Should the last watch show in the below figure?

what does this picture(rebus) riddle means ?

Solve the below puzzle by replacing the question mark with the correct number.

3 6 12

4 8 16

5 10 ?

You find yourself in a strange place guarded by two guards.One of the guard always say truth while other always lies.You don't know the identity of the two.You can ask only one question to go out from there. What should you ask?

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

Can you find out the total number of triangles in the given figure?

Six glasses are in a row. The first three are filled with milk and the last three are empty. By moving only one glass, can you arrange them so that the full and the empty glasses alternate?

A Child was born in Lahore, Pakistan. Still, the child is not a Pakistani citizen. why?