What has many keys but can’t open a single lock?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

Three fair coins are tossed in the air and they land with heads up. Can you calculate the chances that when they are tossed again, two coins will again land with heads up?

There are forty elephants and they have forty-fore heads. How can this be possible?

What do you get if you add 2 to 100 four times?

If you drop me I’m sure to crack, but give me a smile and I’ll always smile back. What am I?

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?

In which direction should the missing arrow point?

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?