Fashions come and fashions go, but the guru who starts a new fashion trend always takes a risk. One way to lessen this risk is…
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…
After an epic voyage across the Pacific, the Polynesian catamarans arrived on Rapa Nui (Easter Island) approximately 1500 years ago. The Island was a paradise…
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…
Polyominoes are shapes that are made by gluing identical squares along their edges. A domino is a shape made from two squares glued along an…
Circuit boards are made by imprinting a conducting metal like copper on a non-conducting material like fibreglass. If it were not for circuit boards, connections…