Twenty frogs are sitting on a log floating on the surface of a river. Two of them decide to jump off into the water.

How many frogs are there on the log at this moment?

How many squares, of any size, can you find on this chessboard which do not contain a Rook?

Find the next number in the series

12, 20, 40, 72, 116, 172 ?

There are five vowels (a, e, i, o, u) in the English language.
Can you tell us a word that contains all these vowels?

I always drive my customer away.

Who am I?

I’m tall when I’m young, and I’m short when I’m old. What am I?

An exterior architect is asked by a builder to plant seven trees in a manner that there are exactly six rows of trees in a straight line and each row has three trees in particular.

How will he do it?

Do you know who was buried in John's tomb?

You have four chains. Each chain has three links in it. Although it is difficult to cut the links, you wish to make a single loop with all 12 links. What is the fewest number of cuts you must make to accomplish this task?

On a bus, there is a 26-year-old pregnant lady.
A 30-year-old policeman.
A 52-year-old random woman.
And the 65-year-old driver.

Who is the youngest?