What number do you get when you multiply all of the numbers on a telephone's number pad?

People make me, save me, change me, raise me. What am I?

How many sides does a circle have?

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

What is the difference between a jeweller and a jailer?

In two decks of cards, what is the least amount of cards you must take to be *guaranteed* at least one four-of-a-kind?

Can you count the number of triangles in the picture below?

This is a famous paradox which has caused a great deal of argument and disbelief from many who cannot accept the correct answer. Four balls are placed in a hat. One is white, one is blue and the other two are red. The bag is shaken and someone draws two balls from the hat. He looks at the two balls and announces that at least one of them is red. What are the chances that the other ball he has drawn out is also red?

If you paint a brown house white it will become a white house. If the stoplight changes from red to green, then the light is green. So, if you throw a white shirt into the Red Sea, what will it become?

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?