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9 August, 04:52

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Which pair of numbers is relatively prime?

A. 108 and 57

B. 21 and 183

C. 55 and 121

D. 60 and 151

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Answers (1)
  1. 9 August, 06:28
    0
    Its not A because 108 and 57 are both divisible by 3

    if you write the numbers in prime factor form you will see the correct optiuon

    for example B:-

    21 = 3 * 7

    183 = 3 * 61 3 is common to both factors so its not B
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