How can a man go eight days without sleep?

13 decks of cards have been mixed. What is the minimum number of cards that must be taken out from the above-mixed cards to guarantee at least one 'four of a kind?

Which English verb becomes past tense just by rearranging the letters?

A plane crashed between the border of Mexico and America. Where do you bury the survivors?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

There's one "sport" in which neither the spectators nor the participants know the score or the leader until the contest ends.

What is it?

Can you solve the maths in the below-given picture equation?

Why Wine Glass Stem is so long?

An infinite number of mathematicians are standing behind a bar. The first asks the barman for half a pint of beer, the second for a quarter pint, the third an eighth, and so on. How many pints of beer will the barman need to fulfill all mathematicians' wishes?

When 99 is considered higher than 100?