If two's company, and three's a crowd, then whats four and five ?

Which is the smallest number that you can write using all the vowels exactly once?

Here is a mathematical expression that also secretly tells a movie name. What movie is that?

If 2 workers can complete painting 2 walls in exactly 2 hours.

How many workers would be needed to paint 18 walls in 6 hours?

How many people must be gathered together in a room, before you can be certain that there is a greater than 50/50 chance that at least two of them have the same birthday?

In a boat, the father of a sailor's son is sitting with the son of the sailor. However, the sailor is not present on the boat.

Can this even be possible?

A man died, leaving $10,000,000 for his widow, 5 sons and 4 daughters. Each daughter received an equal amount, each son received twice as much as a daughter, and the widow received three times as much as a son.

How much did the widow receive?

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

Distances from you to certain cities are written below.

BERLIN 200 miles

PARIS 300 miles

ROME 400 milesAMSTERDAM 300 miles

CARDIFF ??? miles

How far should it be to Cardiff ?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?