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16 October, 01:57

Which pair of numbers is relatively prime? 49 and 56, 65 and 70, 90 and 91, 100 and 102

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  1. 16 October, 03:29
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    90 and 91 are relatively prime, the way they can be relatively prime is to have no factors in common-

    90 - 2x3x3x5

    91 - 7x13
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