Greatest Common Factor of 90, 88, 30, 31

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

• Greatest Common Factor of 90, 88, 30, 31 by common division method
• Greatest Common Factor of 90, 88, 30, 31 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 90

List of positive integer factors of 90 that divides 90 without a remainder.

1,2,3,5,6,9,10,15,18,30,45,90

Factors of 88

List of positive integer factors of 88 that divides 88 without a remainder.

1,2,4,8,11,22,44,88

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 31

List of positive integer factors of 31 that divides 31 without a remainder.

1,31

Greatest Common Factor

We found the factors 90,88,30,31 . The biggest common factor number is the GCF number.
So the greatest common factor 90,88,30,31 is 1.

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

• GCF of 98, 51, 51, 42
• GCF of 70, 76, 39, 91
• GCF of 27, 76, 55, 32
• GCF of 52, 70, 66, 47
• GCF of 68, 75, 77, 35

1. What is the GCF of 90, 88, 30, 31?

Answer: GCF of 90, 88, 30, 31 is 1.

2. How to Find the GCF of 90, 88, 30, 31

Answer: Greatest Common Factor(GCF) of 90, 88, 30, 31 = 1

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

Step 2: Then multiply all the prime factors GCF(90, 88, 30, 31) = 1.