Question

Idenyify the numbers which are co-primes to the first number in the row. 85, 70, 17, 51, 16, 21, 34 please its urgent answer with full explation

Answer 1

Answer:

1. 85 and 70

factors of 85 = 5×17

factors of 70 = 2×5×7

common = 5

so 85 and 70 is co-prime

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