The person who makes it has no need for it; the person who buys it has no use for it. The person who uses it can neither see nor feel it. What is it?

It's a test that will check your IQ.

Suppose you have one 11 minute hourglass and one 13 minute hourglass.

Can you measure exactly fifteen minutes using them ?

No matter how little or how much you use me, you change me every month. What am I?

Before reading ahead, you must know the fact that only one of the people here is telling the truth.

A says that B is lying.
B says that C is lying.
C says both A and B are lying.

Can you find out who is speaking the truth?

Why is a river so rich ?

Three playing cards in a row. Can you name them with these clues? There is a two to the right of a king. A diamond will be found to the left of a spade. An ace is to the left of a heart. A heart is to the left of a spade. Now, identify all three cards.

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

You have two buckets of 11 liters and 6 litres.
How can you measure exactly 8 litres?

Why 1729 is a magic number? Answer Logically.

Which English verb becomes past tense just by rearranging the letters?