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

Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?

You are presented with three boxes. One of them has a red ball inside and the other two have a black ball inside each of them. You are asked to pick up the one with red ball and you pick one. Now, one of the other boxes is opened and it is found to have a black ball.

You are presented with a chance to change your box with the one that is left closed. Will you change your box? Why or why not?

Who can jump higher than a Mountain?

Two in a corner, one in a room, zero in a house, but one in a shelter. What am I?

John buys rice at Rs.60/kg from Britain and then sells them at Rs.5/kg in India. As a result of this, he becomes a millionaire. How come?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

What does below pictogram mean?

In the addition below, all digits have been replaced by letters. Equal letters represent equal digits and different letters represent different digits.
ABCABA
BBDCAA
ABEABB
ABDBAA
------- +
AAFGBDH
What does the complete addition look like in digits?

A tree doubled in height each year until it reached its maximum height over the course of ten years. How many years did it take for the tree to reach half its maximum height?