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

How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?

Can you find the thief by just looking at the picture below?

When my father was 31 I was 8. Now he is twice as old as me. How old am I?

Find The Next Number in this series.
1, 2, 6, 42, 1806 ?

our enemy challenges you to play Russian Roulette with a 6-cylinder pistol (meaning it has room for 6 bullets). He puts 2 bullets into the gun in consecutive slots, and leaves the next four slots blank. He spins the barrel and hands you the gun. You point the gun at yourself and pull the trigger. It doesn't go off. Your enemy tells you that you need to pull the trigger one more time, and that you can choose to either spin the barrel at random, or not, before pulling the trigger again. Spinning the barrel will position the barrel in a random position.

Assuming you'd like to live, should you spin the barrel or not before pulling the trigger again?

John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?

I have two coins.
* One of the coins is a faulty coin having a tail on both sides of it.
* The other coin is a perfect coin (heads on side and tail on other).

I blindfold myself and pick a coin and put the coin on the table. The face of the coin towards the sky is the tail.

What is the probability that another side is also tail?

If,
9 * 8 * 7 = 65
8 * 7 * 6 = 50
7 * 6 * 5 = 37

Find
6 * 5 * 4 = ?

What number when divided in half becomes zero?