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Please complete the series 840, 560, 420, 336, 280, ...?

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Please complete the series 840, 560, 420, 336, 280, ...?
posted Jun 5, 2014 by Amit Kumar Pandey

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We are given a positive integer N. Two of its positive divisors are chosen and the differences between N and these two divisors are 270 and 280 respectively.

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...