There was an aeroplane crash, every single person died, but two people survived. How is this possible?

The day before yesterday I was 25 and the next year I will be 28. This is true only one day in a year. What day is my birthday?

A man is looking at a photograph of someone. His friend asks who it is. The man replies, “Brothers and sisters, I have none. But that man’s father is my father’s son.” Who was in the photograph?

A sundial has the fewest moving parts of any timepiece. Which has the most?

If eleven plus two equals one, what does nine plus five equal?

Can you discover the missing number in this series?

37, 10, 82
29, 11, 47
96, 15, 87
42, ?, 15

Can you replace the question mark with the correct number in the below table sequence?

A man embarked on a questionnaire game. He kept asking the same question to whomever he found. The answer each time was different.

Can you guess what the question was?

What happened when the wheel was invented?

What is the fastest way to double your money?