Question

13. Which of the following are co-primes? (a) 21 and 35 (b) 36 and 25​

Answer 1

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Answer 2

As we know that, the pair of two number which common factor is only 1.

(a) 21 & 35

21= 1×3×7

35 = 1×5×7

So, It is not a co prime.

(b) 36 and 25

36= 1×2×2×3×3

25=1×5×5

So,It is a co-prime.