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?

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?

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?

Below toothpicks/matchsticks indicate the group of fishes moving from west to east direction. Can you make them move from east to west by just moving three toothpicks/matchsticks?

I shave every day, but my beard stays the same. What am I?

A rubber ball keeps on bouncing back to 2/3 of the height from which it is dropped. Can you calculate the fraction of its original height that the ball will bounce after it is dropped and it has bounced four times without any hindrance ?

A Child was born in Lahore, Pakistan.

Still child is not a Pakistani citizen.why ?

John is selling fruits.
He sells grapes at $30, Dates $25, and a Wolfberry $45.
At what price does he sell fig?

PS: Logical Thinking

What type of tree can I carry in my hand?

Do You See It?