Find the prime factors of the two numbers:
44 = 2*2*11
110 = 2*5*11
Then find ones that appear in both factorisations: 2 and 11.
Multiply them together so GCF = 2*11 = 22
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The GCF is: 22
The GCF is: 5
The Greatest Common Factor of 165 and 110 are is 55.
The greatest common factor (GCF) of two numbers is the largest number that divides both numbers evenly. To find the GCF of 220 and 330, we first list the factors of each number: 220 (1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220) and 330 (1, 2, 3, 5, 6, 10, 11, 15, 22, 30, 33, 55, 66, 110, 165, 330). The common factors of 220 and 330 are 1, 2, 5, 10, 11, and 55. Therefore, the greatest common factor of 220 and 330 is 55.
One way to determine the greatest common factor is to find all the factors of the numbers and compare them.The factors of 132 are 1, 2, 3, 4, 6, 11, 12, 22, 33, 44, 66, and 132.The factors of 220 are 1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, and 220The common factors are 1, 2, 4, 11, 22, and 44. Therefore, the greatest common factor is 44.The greatest common factor can also be calculated by identifying the common prime factors and multiplying them together.The prime factors of 132 are 2, 2, 3, and 11.The prime factors of 220 are 2, 2, 5, and 11.The prime factors in common are 2, 2, and 11, so the greatest common factor is 2 x 2 x 11 = 44.The GCF of 132, 220 is 44.