The divisors of 35 are: 1, 5, 7, 35.
The common divisors are: 1, 2, 7, 14.
7 has two factors, one and itself. For them to be common, they need to be compared to another set of factors.
2 divisors: 1, 7
The divisors of 4,375 are 1, 5, 7, 25, 35, 125, 175, 625, 875, 4375.
The GCF is 7.
The single-digit divisors of 7,000 are 1, 2, 4, 5, 7, 8.
Since 7 is a prime, its only divisors are 1 and 7.
There are 8 divisors of 105 (viz: 1, 3, 5, 7, 15, 21, 35, 105)
1, 2, 7, and 14 are common divisors (and common factors) of 28 and 42.
1, 2, 3, 5, 6, 7 and 9
0.35 =35/100 but both 35 and 100 are divisible by 5. So 35/5 = 7 and 100/5 =20. Therefore 35/100=7/20. There are no common divisors of 7 and 20, therefore 7/20 is the simplest form.