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To find the greatest common factor of two numbers, you first need to break them into their prime factors:
15 = 3x5
40 = 2x2x2x5
The next step is to identify any common factors. In this case, the only common factor is 5. Thus, the greatest common divisor of the numbers 15 and 40 is 5.
What else can I help you with?
Does 15 and 20 have a greatest common divisor that's not a prime number?
No. The greatest common divisor for 15 and 20 is five. Five is a prime number.
What is the greatest common divisor of 30 75 and 90?
15
What is the greatest common divisor of 15 and 21?
The GCF is 3.
What the GCD of 3 and 15?
The Greatest Common Divisor (GCD) for 3 15 is 3.
What is the GCD of 10.15.25?
Greatest Common Divisor (GCD) for 10 15 25 is 5.
What are two numbers whos greatest common divisor is 15?
30 and 45
What is the greatest common divisor of 45 and 15?
The Greatest Common Divisor (GCD) for 15 45 is 15.
What is the greatest common divisor of 15 and 18?
The Greatest Common Divisor of 15, 18 3.
The greatest common divisor of 12 and 15?
Greatest common divisor of 12 and 15 is 3.
What is the greatest common divisor of 120 and 375?
The Greatest Common Divisor (GCD) for 120 375 is 15.
What is the greatest common divisor of 4 six and fifteen 15?
The Greatest Common Divisor (GCD) for 4 6 15 is 1.
What is the maximum common factor between 15 and 28?
The Greatest Common Divisor of 15, 78 is 3.
What is the Greatest Common Divisor of forty-five and seventy-five?
The Greatest Common Divisor of 45, 75 is 15.
Does 15 and 20 have a greatest common divisor that's not a prime number?
No. The greatest common divisor for 15 and 20 is five. Five is a prime number.
What is the greatest common divisor of 45 60?
15
What is the greatest common divisor for 15 and 50?
5
What is the greatest common divisor for 12 and 15?
3
