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Название: Recreations in the theory of numbers: the queen of mathematics entertains
Автор: Beiler A.
Аннотация:
Number theory shown to be virtually inexhaustible source of intriguing puzzle problems—interesting to beginning and advanced readers. Divisors, perfect numbers, the congruences of Gauss, scales of notation, the Pell equation, many other aspects produce ingenious puzzles. Solutions to all problems.