Question

if co-prime numbers are numbers that has no common factor in between them except 1, then, show that 45 and 56 are co-prime numb​

Answer 1

[Factorising 45 by common factorization method]

45=1×45

=3×15

=5×9

Therefore, factors of 45= 1 ,3,5,9,15,45.

[Factorising 56 by common factorization method]

56=1×56

=2×28

=4×14

=7×8

Therefore, factors of 56= 1 ,2,4,7,8,14,28,56.

Thus, common factors of 45 and 56 = 1.

Hence they are coprime numbers.