From the following numbers, form 12 pairs which are not co-prime: 2, 4

1.	From the following numbers, form 12 pairs which are not co-prime: 2, 4, 7, 9, 10, 12, 15, 22
Answer» ANSWER :2 and 4, 2 and 10, 2 and 12, 2 and 22, 4 and 10, 4 and 12, 4 and 22, 9 and 12, 9 and 15, 10 and 12, 10 and 15, 10 and 22

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