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?

I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

John was piloting a plane behind a car but was never able to overtake it. Why?

Can you find out the smallest number that can be conveyed as the sum of three squares in three unique ways?

How many points are there on the globe where, by walking one mile south, then one mile east and then one mile north, you would reach the place where you started?

Find the next number in the following series:
6, 14, 26, 98, __?

Write the next letter in this sequence.
O, T, T, F, F, S, S, E, __
**Hint: It is a Number Series Puzzle

Count the squares in the matchstick puzzle below?

What phrase is represented by the Rebus

I have branches, but no fruit, trunk or leaves. What am I?