Which of the following is a pair of co-primes

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Which of the following is a pair of co-primes ?

A. (16, 12)

B. (18, 25)

C. (21, 35)

D. (23, 92)

Answer: Option B

Solution(By Examveda Team)

H.C.F. of 18 and 25 is 1
So, they are co-primes

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