Two numbers with a greatest common divisor of 1 are said to be relatively prime. For example,

Question:

Two numbers with a greatest common divisor of 1 are said to be relatively prime. For example, the numbers 9 and 14 are relatively prime, since their GCD is 1. Determine whether the following pairs of numbers are relatively prime. Write yes or no as your answer.

(a) 8, 9

(b) 15, 24

(d) 177, 178

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