Answers

2014-08-17T23:40:03+08:00
Their GCF is 1. This is because 13 is not a factor of N, therefore, their only common factor is 1.

for example, N= 2.

2 is not a factor of N. And their only common factor is 1. 
1 2 1
thank u
@jameskino25 thank you for answering its a big help