Question

4. Which of the following are pairs of co-primes?
(2, 3), (3,9), (9, 11), (11, 13), (13, 15), (15, 18),
(18, 21)​

Answer 1

Answer:

(2, 3), , (11, 13), (13, 15),

Answer 2

Answer:

(2,3) , (11,13)

Step-by-step explanation:

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