Greatest Common Divisor (GCD) of 3, 7 and 15

The Greatest Common Divisor (GCD) of 3, 7 and 15 is the largest positive integer that equally divides all three numbers: 3, 7 and 15. Mathematically, the problem we are solving is:

GCD(3,7,15)

To solve the problem, we will list all the positive integers (divisors) that can be divided into 3, 7 and 15. 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 7:
1 and 7.

Divisors of 15:
1, 3, 5, and 15.

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, 7 and 15 is:

GCD(3,7,15) = 1

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Greatest Common Divisor (GCD) of 3, 7 and 16
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