Greatest Common Factor of 30, 60, 75, 120

Greatest common factor or Greatest common divisor (GCD) can be calculated in two ways

• Greatest Common Factor of 30, 60, 75, 120 by common division method
• Greatest Common Factor of 30, 60, 75, 120 with matching the biggest common factor

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∴ So the GCF of the given numbers is 3 x 5 = 15

Factors of 30

List of positive integer factors of 30 that divides 30 without a remainder.

1,2,3,5,6,10,15,30

Factors of 60

List of positive integer factors of 60 that divides 60 without a remainder.

1,2,3,4,5,6,10,12,15,20,30,60

Factors of 75

List of positive integer factors of 75 that divides 75 without a remainder.

1,3,5,15,25,75

Factors of 120

List of positive integer factors of 120 that divides 120 without a remainder.

1,2,3,4,5,6,8,10,12,15,20,24,30,40,60,120

Greatest Common Factor

We found the factors 30,60,75,120 . The biggest common factor number is the GCF number.
So the greatest common factor 30,60,75,120 is 15.

Here are some samples of GCF of two or more Numbers calculations.

• GCF of 21, 35, 90, 612
• GCF of 41, 34, 90, 376
• GCF of 41, 93, 66, 525
• GCF of 40, 48, 80, 161
• GCF of 63, 16, 66, 506

1. What is the GCF of 30, 60, 75, 120?

Answer: GCF of 30, 60, 75, 120 is 15.

2. How to Find the GCF of 30, 60, 75, 120

Answer: Greatest Common Factor(GCF) of 30, 60, 75, 120 = 15

Step 1: Divide all the numbers with common prime numbers having remainder zero.

Step 2: Then multiply all the prime factors GCF(30, 60, 75, 120) = 15.