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∵某個自然數被247除餘63,被248除也餘63,∴這個數减去63得到的新數既能被247整除,也能被248整除,∵相鄰的兩個整數互質,∴新數能被247×248整除,∵247×24826=6125626=2356,∴這個數除以26的餘數等於63除以26…
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