How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

Nine marbles are arranged in the image below. Can you slide two marbles to form a square?

A person is found murdered in his Chamber. When the crime scene is investigated, the Investigator find out that there is a calendar on which the victim has written a few numbers with his blood. The numbers are 4, 11, 11 and 4.

There are four suspects in the murder, John, Jacob, Anna and Lee. Can you find out who is the murderer?

I am never scared but became petrified and can’t live in a house but would die to make one. What am I?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

What does man love more than life, and hate more than death or mortal strife; that which satisfied men want; the poor have, and the rich require; the miser spends, the spendthrift saves, and all men carry to their graves?

You have a 12 liters jug full of water. You have two empty 8 liters and 5 liters jug. How can you divide the water into two equal parts using these jugs?

What kind of band never plays music?

He does not have any heart but still, He manages to live.
If you kill him, you will eventually die but yet you kill him.
He cannot run, who is He?