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?

In the four images below, can you find the odd one out?

An infinite number of mathematicians are standing behind a bar. The first asks the barman for half a pint of beer, the second for a quarter pint, the third an eighth, and so on. How many pints of beer will the barman need to fulfill all mathematicians' wishes?

The sum of a mother, her baby and her dog's weight is 170 Kg. How much does the baby weigh if the mother weighs 100 kg more than the combined weight of the baby and the dog, and the dog weighs 60 per cent less than the baby?

A man was driving a black truck. His lights were not on. The moon was not out. A lady was crossing the street. How did the man see her?

How many words can a quill made with the feather of a pigeon write with a 100ml bottle of black ink?

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.

If eleven plus two equals one, what does nine plus five equal?

Can you Find and name the hidden bird in the picture below ?

What four weights can be used to balance from 1 to 30 pounds?