A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

If your uncle’s sister is not your aunt, what relation is she to you?

The host of a game show, offers the guest a choice of three doors. Behind one is a expensive car, but behind the other two are goats.
After you have chosen one door, he reveals one of the other two doors behind which is a goat (he wouldn't reveal a car).

Now he gives you the chance to switch to the other unrevealed door or stay at your initial choice. You will then get what is behind that door.

You cannot hear the goats from behind the doors, or in any way know which door has the prize.

Should you stay, or switch, or doesn't it matter?

Can you name an animal whose killing cannot be performed without spilling your own blood?

What kind of band never plays music?

What goes up but never comes down?

I left my campsite and hiked south for 3 miles. Then I turned east and hiked for 3 miles. I then turned north and hiked for 3 miles, at which time I came upon a bear inside my tent eating my food! What colour was the bear?

Solve the equation by replacing the alphabet with numbers.

MOM + MOM + NO = BOOK=

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

If six children and two dogs were under an umbrella, how come none of them got wet?