Q: Is 12 a prime factor of 84?

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The GCF of 48 and 84 is 12. One way is to list all the factors of both numbers and compare them. The factors of 48 are 1, 2, 3, 4, 6, 8, 12, 16, 24, and 48. The factors of 84 are 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, and 84. The common factors are 1, 2, 3, 4, 6, and 12. Therefore, the greatest common factor is 12. The greatest common factor can also be calculated by identifying the common prime factors and multiplying them together. The prime factors of 48 are 2, 2, 2, 2, and 3. The prime factors of 84 are 2, 2, 3, and 7. The prime factors they have in common are 2, 2, and 3, so the greatest common factor is 2 x 2 x 3 = 12

84 42,2 21,2,2 7,3,2,2

12 is a composite number, not a prime factor.

Since 12 is a factor of 84, it is automatically the GCF.

The GCF of 84 and 108 is 12. One way to determine the greatest common factor is to find all the factors of the numbers and compare them. The factors of 84 are 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, and 84. The factors of 108 are 1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, and 108. The common factors are 1, 2, 3, 4, 6, and 12. Therefore, the greatest common factor is 12. The greatest common factor can also be calculated by identifying the common prime factors and multiplying them together. The prime factors of 84 are 2, 2, 3, and 7. The prime factors of 108 are 2, 2, 3, 3, and 3. The prime factors in common are 2, 2 and 3, so the greatest common factor is 2 x 2 x 3 = 12.

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7 is the greatest prime factor of 84.

2 84 3 12 3 4 2 2

The LCM of 12 and 21 is 84. To find the LCM, prime factor both numbers then multiply each factor the most times it was used in either number.12=2x2x321=3x7lcm=2x2x3x7=84The Least Common Multiple (LCM) for 12 21 is 84.

The GCF of 48 and 84 is 12. One way is to list all the factors of both numbers and compare them. The factors of 48 are 1, 2, 3, 4, 6, 8, 12, 16, 24, and 48. The factors of 84 are 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, and 84. The common factors are 1, 2, 3, 4, 6, and 12. Therefore, the greatest common factor is 12. The greatest common factor can also be calculated by identifying the common prime factors and multiplying them together. The prime factors of 48 are 2, 2, 2, 2, and 3. The prime factors of 84 are 2, 2, 3, and 7. The prime factors they have in common are 2, 2, and 3, so the greatest common factor is 2 x 2 x 3 = 12

84 42,2 21,2,2 7,3,2,2

12 is a composite number, not a prime factor.

To find the greatest common factor (GCF) of 36, 60, and 84, you can break down each number into its prime factorization and then identify the common prime factors. Prime factorization of 36: 36 = 2 2 × 3 2 36=2 2 ×3 2 Prime factorization of 60: 60 = 2 2 × 3 × 5 60=2 2 ×3×5 Prime factorization of 84: 84 = 2 2 × 3 × 7 84=2 2 ×3×7 Now, identify the common prime factors and multiply them: � � � ( 36 , 60 , 84 ) = 2 2 × 3 = 12 GCF(36,60,84)=2 2 ×3=12 So, the greatest common factor of 36, 60, and 84 is 12.

Since 12 is a factor of 84, it is automatically the GCF.

The GCF of 84 and 108 is 12. One way to determine the greatest common factor is to find all the factors of the numbers and compare them. The factors of 84 are 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, and 84. The factors of 108 are 1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, and 108. The common factors are 1, 2, 3, 4, 6, and 12. Therefore, the greatest common factor is 12. The greatest common factor can also be calculated by identifying the common prime factors and multiplying them together. The prime factors of 84 are 2, 2, 3, and 7. The prime factors of 108 are 2, 2, 3, 3, and 3. The prime factors in common are 2, 2 and 3, so the greatest common factor is 2 x 2 x 3 = 12.

7

The GCF of 72 and 84 is 12. One way to determine the greatest common factor is to find all the factors of the numbers and compare them. The factors of 72 are 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, and 72. The factors of 84 are 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, and 84. The common factors are 1, 2, 3, 4, 6, and 12. Therefore, the greatest common factor is 12. The greatest common factor can also be calculated by identifying the common prime factors and multiplying them together. The prime factors of 72 are 2, 2, 2, 3, and 3. The prime factors of 84 are 2, 2, 3, and 7. The prime factors in common are 2, 2, and 3, so the greatest common factor is 2 x 2 x 3 = 12.

The greatest common factor of 12 66 and 84 is 6.