A bookworm starts at the outside of the front cover of volume I of a certain set of books and eats his way to the outside of the back cover of volume III.

If each volume is one inch thick, how much distance did the bookworm travel?

Riddle AnswerA bookworm starts at the outside of the front cover of volume I of a certain set of books and eats his way to the outside of the back cover of volume III.

If each volume is one inch thick, how much distance did the bookworm travel?

Riddle AnswerLook at the 4 dots in the image. Draw 3 straight continuous lines without lifting the pen from the paper and make sure that the lines pass through each of the 4 dots.

Riddle AnswerA cable of 80m (meters) is hanging from the top of two poles that are both 50m from the ground.

What is the distance between the two poles, to one decimal place, if the center of the cable is 10m above the ground?

Riddle AnswerYou have four closed boxes as shown:

While you know all four types of food are inside and each box only contains one type of food, you also know that only one of the boxes is labeled correctly.

What’s the minimum number of boxes that you need to open to be guaranteed (regardless of luck) to find out which one is labeled correctly?

Riddle Answer