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

Baseball bat and ball cost $100. If the bat cost $99 more than the ball, what is the cost of each?

John went to a parrot shop in Mexico, and the parrot owner told him that his parrot is so unique that he repeats everything he hears. John got excited and immediately bought the parrot. John went home and spoke many words, but the parrot does not repeat anything.
He went again to the parrot shop and complaint to the shopkeeper, but the shopkeeper never lied. Explain?

Move three sticks of the spiral below to form a square.

Can you find out the number of the parking space in which the car is parked?

A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?

A famous swimmer can swim downstream in a lake in exactly 40 minutes with the lake current.
He can swim upstream in that lake in exactly 60 minutes against the lake current.
The length of the lake is 2 km.

How long he can cover the distance of one side at a still lake with no current?

In the below-given picture of a pretty girl, there is something wrong. Can you find out what it is?

What has hands, but can’t clap?

You knock a Table over in the library, and suddenly 20 eyes are looking at you.