Find out which of the following sets form co-prime numbers : (a) (12, 7) (b) (21, 42) (c) (43, 129) (d) (3, 9)

SSC SSC CGL Tier 1 Easy HCF & LCM Multiple Correct

Question

Find out which of the following sets form co-prime numbers:

(a) (12, 7)

(b) (21, 42)

(c) (43, 129)

(d) (3, 9)

Options

A.

(12, 7)

B.

(21, 42)

C.

(43, 129)

D.

(3, 9)

co-primehcfnumber theory

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