There are infinitely many such pairs.
For example,
suppose p, q, r and s are 4 prime numbers.
Then p*q and r*s are both composite but p*q and r*s are coprime.
And you could always mutiply either one of them by the prime number t, and maybe the other one by another r to give p*q*t and r2*s. And so on.
The smallest pair of composites is 14 and 15.
4 and 9
The GCF of all the composite numbers under 100 is 1. For e.g 4 & 9 are composite numbers & their GCF is 1, so if we take other composite numbers along with 4 & 9 the GCF will be 1.
4 and 9 have a GCF of 1
3 and 7?
4 and 9 hope it helps!! : )
25, 49 and 121
Any two coprime numbers
The GCF of all the composite numbers under 100 is 1. For e.g 4 & 9 are composite numbers & their GCF is 1, so if we take other composite numbers along with 4 & 9 the GCF will be 1.
4 and 9 have a GCF of 1
Any two composite numbers who do not share the same prime factors.15 = 5x322 = 11x2So 15 and 22 have a GCF of 1
3 and 7?
Any pair of prime numbers as for example 19 and 23
5 and 7
The pair of numbers whose GCF is 1 and LCM is 36 is 9 and 4. The numbers should be greater than their GCF and less than their LCM.
4 and 9 hope it helps!! : )
25 and 36
numbers which are co prime have a GCF as 1 For example *2,3 *37,47 *23,24
25, 49 and 121