Greatest Common Factor of 10, 99, 12, 21

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

• Greatest Common Factor of 10, 99, 12, 21 by common division method
• Greatest Common Factor of 10, 99, 12, 21 with matching the biggest common factor

Maximum 4 Number can be enter but you can reset

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

Factors of 10

List of positive integer factors of 10 that divides 10 without a remainder.

1,2,5,10

Factors of 99

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

1,3,9,11,33,99

Factors of 12

List of positive integer factors of 12 that divides 12 without a remainder.

1,2,3,4,6,12

Factors of 21

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

1,3,7,21

Greatest Common Factor

We found the factors 10,99,12,21 . The biggest common factor number is the GCF number.
So the greatest common factor 10,99,12,21 is 1.

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

• GCF of 21, 56, 89, 88
• GCF of 51, 37, 79, 93
• GCF of 45, 47, 94, 81
• GCF of 22, 60, 59, 95
• GCF of 56, 14, 64, 98

1. What is the GCF of 10, 99, 12, 21?

Answer: GCF of 10, 99, 12, 21 is 1.

2. How to Find the GCF of 10, 99, 12, 21

Answer: Greatest Common Factor(GCF) of 10, 99, 12, 21 = 1

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

Step 2: Then multiply all the prime factors GCF(10, 99, 12, 21) = 1.