There are 20 people in an empty, square room. Each person has full sight of the entire room and everyone in it without turning his head or body, or moving in any way (other than the eyes). Where can you place an apple so that all but one person can see it?

What makes this number unique: 8,549,176,320?

I am lying and I always lie. Tell me whether I am lying or telling the truth.

An old Woman left INR 33,333 to be divided equally among two fathers and two sons and each was to receive INR 11,111.
How was this possible?

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?

Find the hidden tiger in the given optical illusion ?

A man was gazing through the window of the 23rd floor of the building. He suddenly opened the window and jumped on the other side of the window. On landing on the floor, there was not a sheer mark of injury on him.

How can that be possible if he did not use any kind of parachute and did not land on a soft surface?

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

How can you leave a room with two legs and return with six legs?

There's one "sport" in which neither the spectators nor the participants know the score or the leader until the contest ends.

What is it?