Greatest Common Factor of 30, 49, 21, 75

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

• Greatest Common Factor of 30, 49, 21, 75 by common division method
• Greatest Common Factor of 30, 49, 21, 75 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 30

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

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

Factors of 49

List of positive integer factors of 49 that divides 49 without a remainder.

1,7,49

Factors of 21

List of positive integer factors of 21 that divides 21 without a remainder.

1,3,7,21

Factors of 75

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

1,3,5,15,25,75

Greatest Common Factor

We found the factors 30,49,21,75 . The biggest common factor number is the GCF number.
So the greatest common factor 30,49,21,75 is 1.

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

• GCF of 63, 25, 35, 44
• GCF of 76, 79, 63, 48
• GCF of 76, 49, 83, 79
• GCF of 17, 72, 67, 96
• GCF of 87, 72, 87, 31

1. What is the GCF of 30, 49, 21, 75?

Answer: GCF of 30, 49, 21, 75 is 1.

2. How to Find the GCF of 30, 49, 21, 75

Answer: Greatest Common Factor(GCF) of 30, 49, 21, 75 = 1

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

Step 2: Then multiply all the prime factors GCF(30, 49, 21, 75) = 1.