No.
45 x 68 = 3060
60 x 50 = 3000
No, 20 is a factor of 3000.
Since 120 is a factor of 3000, it is automatically the GCF of this problem.
No, but 5 is a factor of 45.
Sixteen factor pairs.
Since 45 is a factor of 270, it is automatically the GCF.
Six is not a factor of 45.
6 is not a factor of 45.
No, 13 is not a factor of 45.
The greatest (or largest) factor of 45 is 45. The next largest factor is 15.
Six is not a factor of 45 and cannot be part of a factor pair.