Question

The H.C.F of two co prime numbers is .

• A. 1
• B. 0.0
• C. 2

Answer 1

The correct option is A 1

Co-prime numbers are the numbers which do not have any factor in common except 1. Hence, all co-prime numbers have only 1 as their HCF. For example, 6 and 7 are co-prime numbers.
Factors of 6 = $1\times 2\times 3\times 6$
Factors of 7 = $1\times 7$
Common factors = 1
H.C.F = 1
Note : Co- prime numbers need not necessarily be prime numbers.