An office is divided into 8 cubicles. How many of the cubicles are painted if only 1/8 of the cubicles are painted?

The barber of Town shaves all men living in the town. No man living in the town is allowed to shave himself. The barber lives in that town. Who then shaves the barber of the town?

What can go up a chimney down, but can’t go down a chimney up?

There are 20 people in an empty, square room. Each person has full sight of the entire room and everyone in it without turning his head or body, or moving in any way (other than the eyes). Where can you place an apple so that all but one person can see it?

Find the next number in the sequence

1, 2, 6, 21, 88, __?

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

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?

Solve the following series:
AZ, GT, MN, __, YB

In a football game, Christina defeated Teresa by 2 - 0 but no man from either side scored. How can this be possible?

You need to climb ten stairs. At every stair, you can either take one step up or you can jump two steps up.

In how many different ways you can climb 10 stairs?