Question

B. Mark () against the correct answer in each of the following:
Which of the following are co-primes?
(a) 91 and 72
(b) 34 and 51
(c) 21 and 36
11.
(d) 15 and 20
ore is their​

Answer 1

Answer:

I think it's (c) 21 and 36

Step-by-step explanation: