I have one of the three numbers: 1, 2, or 3 in my mind. I speak only truth. You can ask me just one question for which I will only reply in yes or no or don't know. What question will you ask from me so that you are able to know the number?

A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.

What English word has three consecutive double letters?

Two men play a dice game involving roll of two standard dice. Man X says that a 12 will be rolled first. Man Y says that two consecutive 7s will be rolled first. The men keep rolling until one of them wins.

What is the probability that X will win ?

There is a bag which have 21 blue balls and 23 red balls. You also have 22 red balls outside the bag. Randomly remove two balls from the bag. * If they are of different colors, put the blue one back in the bag. * If they are the same colour, take them out and put a red ball back in the bag. Repeat this until only one ball remains in the bag. What is the color of the sole ball left in the bag ?

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?

How many letters are in the alphabet?

Who has married many women but was never married?

What can jump higher than a building?

Can you count the number of lines in the below picture?