Question

show that 231 and 546 are not coprime

Answer 1

Hi friend, Here is the required answer:-

Co prime means the numbers which are only divisible by 1.

So 231 and 546 are divisible by 7 also.
I.e. 231/7= 33 and 546/7= 78.

So, the numbers are not co prime.

Hope this helps you...

Answer 2

Factors of 231 - 3 × 7 × 11
Factors of 546- 2 ×3 × 7 × 13

Common factors of 231 and 546 are 3 and 7 .
=> 231 and 546 aren't co-primes because they have 3 and 7 as factors but co-primes only have 1 as common factor.