The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?

4 fathers, 2 grand-fathers and 4 sons went to watch the movie.What is the minimum number of tickets they need to buy ?

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?

Count the number of triangles in the picture below:

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

A bomb goes off.
Carnage.
One person, only a few feet away, survives! How can this be?

What's a single-digit number with no value?

What goes up but never comes down?

A woman lives in a Tall building thirty-six floors high and served by several elevators which stop at each floor going up and down. Each morning she leaves her apartment and goes to one of the elevators. Whichever one she takes is three times more likely to be going up than down. Why?

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