If eleven plus two equals one, what does nine plus five equal?
What has hands, but can’t clap?
A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?
A man hijacks an aeroplane transporting both passengers(8 of them) and valuable cargo. After taking the cargo, the man demands nine parachutes, puts one of them on, and jumps, leaving the other eight behind. Why did he want eight?
What runs around the whole yard without moving?
Yesterday I fell from 30 feet high ladder but I don't get hurt. Why?
What three numbers, none of which is zero, give the same result whether they’re added or multiplied?
A prisoner is told: "If you tell a lie, we will hang you and if you tell the truth, we will shoot you." What did the prisoner say to save himself?
The below mentioned letters have been placed in a order using a logic.
DEAD, BALL, FEAR, SHOP
Can you find the logic?
I have branches, but no fruit, trunk or leaves. What am I?
What occurs twice in a week, once in a year but never in a day?
In 2011, people playing Foldit, an online puzzle game about protein folding, resolved the structure of an enzyme that causes an Aids-like disease in monkeys. Researchers had been working on the problem for 13 years. The gamers solved it in three weeks.