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Greatest Common Divisor. Euclidean algorithm
The greatest common divisor (GCD) of two numbers, say 12 Â and 8 , is the greatest number (in this case, 4) that divides them without a...
Math and Geometry
Three students and eight beer bottles
Puzzle. Three students, Peter, James, and Emma, went out to celebrate their exams. Peter bought five beer bottles, each costing £3,...
Puzzles
A glass of milk and a bucket of water
Puzzle. Â We have a glass of milk and a bucket of water ( Fig. 1 ). We take a spoonful of milk from the glass and transfer it to the...
Puzzles
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