This knot in my extension cord occurred inadvertently and thus I assumed with the highest likelihood it could be undone with a single pass through a cable end through a loop or loops with the loops arranged so only a single pass is required. You would think this because once the Read more…
Research Links 536 Puzzles and Curious Problems During a gale a maypole was broken in such a manner that it struck the level ground at a distance of twenty feet from the base of the pole, where it entered the earth. It was repaired, and broken by the wind a Read more…
Research LInks Brain Teasers and Puzzles Find the solution for the system of equations: Multiply each equation by the term missing to make each second term a triple Read more…
Research Links Wikipedia: Euclidean algorithm A 24-by-60 rectangle is covered with ten 12-by-12 square tiles, where 12 is the GCD of 24 and 60. More generally, an a-by-b rectangle can be covered with square tiles of side-length c only if c is a common divisor of a and b. So the task is to find the largest square that tiles Read more…
A farmer has 100 dollars to buy 100 animals. A cow costs 10, a pig costs 5 and a chicken costs 50 cents. How many of each does he buy? He must use all his money and he must buy at least 1 of each type. note Z must be even Read more…
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Research Links Wikipedia: Eulers Theorem Wikipedia Euler Totient Function Online totient calculator Euler's theorem derivation Fermat's little theorem Eulers theorem is very similar to Fermat's little theorem. It is not restricted to prime number p. It is restricted to relatively prime a & p. It states: Where is Read more…
Click on the image to go there. The flash mind reader has you compute a number in your head. You note the symbol next to the number you compute. You then click the crystal ball and it returns the symbol you were thinking of. This is a classic "force card" Read more…