1, 2, 3 and 6
Answer: 6Definition: A factor is a divisor - a number that will evenly divide into another number. The greatest common factor of two or more numbers is the largest factor that both numbers have in common.Method:One way to determine the common factors and greatest common factor is to find all the factors of the numbers and compare them.The factors of 42 are 1, 2, 3, 6, 7, 14, 21, and 42.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, and 6. Therefore, the greatest common factor is 6.
The common factors of 21 42 and 84 are 21
The common factors are: 1, 2, 3, 4, 6, 12. 12 is the greatest common factor of 72 and 84. All the factors of 12 will therefore divide by both 72 and 84.
Multiples of 12 are 12, 24, 36, 48, 60, 72, 84... Multiples of 42 are 42, 84... Two common multiples of 12 and 42 are 84 and 168. The Least Common Multiple of 12 and 42 is 84.
6
42 = 2 x 3 x 7 72 = 23 x 32 84 = 22 x 3 x 7
The GCF is 6.
The GCF is 6.
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.
they can all be divided by 2.
1 and 7
It is 7