Greatest Common Factor of 84, 42, 30, 25

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

• Greatest Common Factor of 84, 42, 30, 25 by common division method
• Greatest Common Factor of 84, 42, 30, 25 with matching the biggest common factor

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∴ GCF of numbers is 1 because of no common factors present between them.

Factors of 84

List of positive integer factors of 84 that divides 84 without a remainder.

1,2,3,4,6,7,12,14,21,28,42,84

Factors of 42

List of positive integer factors of 42 that divides 42 without a remainder.

1,2,3,6,7,14,21,42

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 25

List of positive integer factors of 25 that divides 25 without a remainder.

1,5,25

Greatest Common Factor

We found the factors 84,42,30,25 . The biggest common factor number is the GCF number.
So the greatest common factor 84,42,30,25 is 1.

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

• GCF of 12, 97, 38, 63
• GCF of 57, 83, 43, 67
• GCF of 54, 75, 62, 39
• GCF of 57, 36, 95, 29
• GCF of 59, 84, 63, 71

1. What is the GCF of 84, 42, 30, 25?

Answer: GCF of 84, 42, 30, 25 is 1.

2. How to Find the GCF of 84, 42, 30, 25

Answer: Greatest Common Factor(GCF) of 84, 42, 30, 25 = 1

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

Step 2: Then multiply all the prime factors GCF(84, 42, 30, 25) = 1.