GCD: 14
The GCD of 14, 42 is 14.
GCD(42, 65) = 1
GCD: 21
GCD: 14
The Greatest Common Divisor (GCD) for 42 56 is 14.
Greatest Common Divisor (GCD) for 30 42 is 6.
GCD: 6
GCD(5, 28) = 140
The GCD of 18, 28 is 2.
since 14 = 14 x 1 and 56 = 14 x 4 the answer is 14, since it divides evenly into both and clearly nothing larger will.There is a clever algorithm that can help you work this out in the general case:GCD(14, 56) = GCD(14, 56 - 14) = GCD(14, 42)This step (subtract the smaller from the larger) relies on the fact that any number that divides both 14 and 56 also divides 56 - 14.Repeat this:GCD(14, 42) = GCD(14, 42 - 14) = GCD(14, 28)GCD(14, 28) = GCD(14, 28 - 14) = GCD(14, 14)which is clearly 14.This is called Euclid's Algorithm.
Greatest Common Divisor (GCD) for 8 28 is 4.
It is 28