what is the greatest common divisor of positive integers m and n?
1-m is prime
haha, its C. I was so confused about this question. I thought S2:
was 2-2n=7m I was like how the heck can n be + then???
S1: Insuff, nothin bout N
S2: 2n=7m just plug in for either. m=2 n=7 m=4 n=14
GCF for first =1 GCF for second = 2. Insuff
if M=prime then---> n=7m/2 M must be divisible by 2 b/c n= integer.
So M=2 since its the only prime divisible by 2. thus n=7.