Greatest Common Factor of 99, 30, 89, 20

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

• Greatest Common Factor of 99, 30, 89, 20 by common division method
• Greatest Common Factor of 99, 30, 89, 20 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 99

List of positive integer factors of 99 that divides 99 without a remainder.

1,3,9,11,33,99

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 89

List of positive integer factors of 89 that divides 89 without a remainder.

1,89

Factors of 20

List of positive integer factors of 20 that divides 20 without a remainder.

1,2,4,5,10,20

Greatest Common Factor

We found the factors 99,30,89,20 . The biggest common factor number is the GCF number.
So the greatest common factor 99,30,89,20 is 1.

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

• GCF of 60, 51, 49, 42
• GCF of 45, 14, 56, 74
• GCF of 29, 56, 19, 96
• GCF of 85, 24, 78, 15
• GCF of 30, 33, 70, 34

1. What is the GCF of 99, 30, 89, 20?

Answer: GCF of 99, 30, 89, 20 is 1.

2. How to Find the GCF of 99, 30, 89, 20

Answer: Greatest Common Factor(GCF) of 99, 30, 89, 20 = 1

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

Step 2: Then multiply all the prime factors GCF(99, 30, 89, 20) = 1.