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?

In one of the popular batman series movie "Batman Forever", there was a riddle that goes like "Tear me off and then scratch my head and I was red then and now I am back. Who am I?

It is deaf, Dumb and Blind!!!

Still, always tells the truth. What is it?

I was speeding and ran through a stop sign, yet two traffic officers who were there do nothing about it.

why?

On my way to St. Ives I saw a man with 7 wives. Each wife had 7 sacks. Each sack had 7 cats. Each cat had 7 kittens. Kittens, cats, sacks, wives. How many were going to St. Ives?

What do you answer even though it never asks you questions?

Can you decipher these quotes by Albert Einstein?
Blf xzm mvevi hloev z kilyovn lm gsv ovevo lm dsrxs rg dzh xivzgvw.

John killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

Can you place six X (crosses) in below board without making three in a row in any way ?