A shepherd had 18 sheep, out of which, all but ten died.

Can you tell us how many sheep was he left with?

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?

There once were seven dwarfs who were all brothers. They were all born two years apart. The youngest dwarf is seven years old. How old is his oldest brother?

You are in a room that has three switches and a closed door. The switches control three light bulbs on the other side of the door. Once you open the door, you may never touch the switches again. How can you definitively tell which switch is connected to each of the light bulbs?

In a stable, there are men and horses. In all, there are 22 heads and 72 feet. How many men and how many horses are in the stable

Find the last number in the series below:

voN luJ yaM raM ---

How many times can you subtract the number 5 from 25?

The day after tomorrow will be three days before Tuesday. Can you find out what is today?

What number divided by 4 is the same as that number minus 4?

Can you fill the blank with the correct number?

6 30 870 756030 _____