Greatest Common Divisor (GCD) of 3, 6 and 20

The Greatest Common Divisor (GCD) of 3, 6 and 20 is the largest positive integer that equally divides all three numbers: 3, 6 and 20. Mathematically, the problem we are solving is:

GCD(3,6,20)

To solve the problem, we will list all the positive integers (divisors) that can be divided into 3, 6 and 20. We will then compare the lists of divisors to find the greatest divisor they have in common.

Divisors of 3:
1 and 3.

Divisors of 6:
1, 2, 3, and 6.

Divisors of 20:
1, 2, 4, 5, 10, and 20.

When we compare the lists of divisors above, we see that the largest number they have in common is 1. Thus, the Greatest Common Divisor (GCD) of 3, 6 and 20 is:

GCD(3,6,20) = 1

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Greatest Common Divisor (GCD) of 3, 6 and 21
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