Question

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

• A. (28, 35)
• B. (14, 39)
• C. (31, 62)
• D. (35, 63)

Answer 1

The correct option is B (14, 39)

If the H.C.F of two numbers are $1$ they are said to be co-prime.

Hence, answer will be B as 14 and 39 have no common factor other than 1.