How can a man go eight days without sleep?

Why Aeroplane windows are round?

No matter how little or how much you use me, you change me every month. What am I?

John asked Jack, "The time right now is 7 pm. Can you tell me what will be the time 23, 999, 995 hours later ?"

While Bella does not know the answer, do you ?

This puzzle is for Harry Potter fans. Do you know why Tom Riddle is called Lord Voldemort?

Usually, a boxing match consists of twelve rounds. In a particular friendly match between two heavyweights, the match was finished in the ninth round itself as one of the boxers knocked out the other one.

But, in that fight, no man threw even a single punch.

How can this be possible?

what does the below math rebus puzzle mean?

Look at the picture and find out which square is not linked with any of the other squares.

A man dies of old age on his 25 birthday. How is this possible?

People put me on the table and cut me but do not eat me. What am I?