Question

Out of 15, 16, 21 and 28 find out all the pairs of co prime number​

Answer 1

Answer:

The pair will be 15-16, 16-21, 21-28, 15-28, 16-28. From above it is clear that 15 and 16 are co-prime because common factor is 1. Hence pairs 15 and 16, 16 and 21, 15 and 28 are co-primes

Step-by-step explanation:

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