There is a werewolf hiding in a red hood and 11 children sitting around a campfire. Katrina, who is sitting opposite the werewolf, plucks a…
How many extraterrestrial civilizations are there in our galaxy with which we might communicate? Dr. Drake split the problem into 7 smaller problems: How many…
One of the sports that grasshoppers play when they are by themselves is the jump-fest. To play, a number of grasshoppers stand on a tire…
Hopscotch was originally a training exercise for Roman infantry. These frogs don’t know that history. They are just interested in jumping about on their lily…
This is a game for two frog catchers. There are a bunch of frogs to catch and one special frog. You and a friend are…
This problem is best for people who can express numbers in different bases. An abacus is a mechanical device for temporarily storing numbers during a…
The Egyptians only used fractions with a numerator of 1.* Take the fraction 80/100 and keep subtracting the largest possible Egyptian fraction till you get…
Equipment: A deck of playing cards with Aces = 1 and the Jacks, Queens, Kings and Jokers left to one side. Number of Players: 2-6…
Write the numbers 1 through 8 in the circles so that no two numbers inside circles joined by a line differ by 1. Here is…
In the movie Die Hard, 4L of water must be weighed, and if incorrect, the fountain from which the water is drawn will explode, killing…