Which number should replace the question mark?

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

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?

You can take four of the five letters out of this word, but the pronunciation never changes. What is the word?

How can you leave a room with two legs and return with six legs?

In four steps you need to move the word 'cold' From 'warm' by replacing one alphabet at a time such that every word formed at each step is acceptable in English Dictionary.

How many words can a pen with half refill write?

What does an Island and the letter T have in common?

All of Jacob's shoes are red except two.
All of Jacob's shoes are green except two.
All of Jacob's shoes are yellow except two.

How many shoes does Jacob have?

There is a box in which distinct numbered balls have been kept. You have to pick two balls randomly from the lot.

If someone is offering you a 2 to 1 odds that the numbers will be relatively prime, for example
If the balls you picked had the numbers 6 and 13, you lose $1.
If the balls you picked had the numbers 5 and 25, you win $2.

Will you accept that bet?