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?

What is wrong in the below Picture?

I guess 76.8% of readers will like this riddle.

What's the least number of people should read this post?

How can you spell "White of an egg" in one word?
Hint: I know you can spell coke, poke, and joke.

John has played 50 ODI's and his average is 50. How many runs should he score in his 51st ODI, so that his average score jumps to 51?

When a clock is observed, the hour hand is at a minute mark and the minutes hand is six minutes ahead of it.

When the clock is observed again after some time, the hour hand is precisely on a different minute mark and the minute hand is seven minutes ahead of it.

Can you calculate how much time has elapsed between the two observations?

How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

What do the following words have in common?

Assess
Banana
Dresser
Grammar
Potato
Revive
Uneven
Voodoo

Using Only Five 5's and any mathematical operator make sum as 37

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?