# Which of the following is a composite number? a. 31 b. 49 c. 73 d. 109 Which pair of numbers is relatively prime? a. 20 and 76 b. 25 and 65 c. 46 and 87 d. 63 and 117

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d. 109 is a composite number and c. 46 and 87 are relatively prime

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