The average age of 10 members of a committee is the same as it was 4 years ago, because an old member has been replaced by a young member. Find how much younger is the new member ?

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

Jim and Sarah are in a long-distance relationship. Jim buys an engagement ring for Sarah and wants to mail it to her. Unfortunately, the only way to ensure the ring will be received is to place a lock on the package. Jim has locks and Sarah has locks, but neither has keys for each other’s locks. How can they make sure the ring isn’t stolen?

It belongs to you, but other people use it more than you do. What is it?

A man calls his dog from the opposite side of a river. The dog crosses the river without a bridge or a boat and manages to not get wet. How is this possible?

A man dies of old age on his 25 birthday. How is this possible?

What's a single-digit number with no value?

What goes through cities and fields, but never moves?

If six children and two dogs were under an umbrella, how come none of them got wet?

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?