21 and 28 have 7 as a factor.
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Answer:The greatest common factor of 70 and 126 is 14.The common factors of 70 and 126 are 1, 2, 7, and 14.Definition: A factor is a divisor - a number that will evenly divide into another number. The common factors of two or more numbers are all the factors that the numbers have in common. The greatest common factor of two or more numbers is the largest factor that the numbers have in common.Methods: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 70 are 1, 2, 5, 7, 10, 14, 35, and 70.The factors of 126 are 1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, and 126.The common factors are 1, 2, 7, and 14. Therefore, the greatest common factor is 14.The greatest common factor can also be calculated by identifying the common prime factors and multiplying them together.The prime factors of 70 are 2, 5, and 7.The prime factors of 126 are 2, 3, 3, and 7.The prime factors in common are 2 and 7, so the greatest common factor is 2 x 7 = 14.It is: 14
A factor is a divisor - a number that will evenly divide into another number. 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 63 are 1, 3, 7, 9, 21, and 63. The common factors are 1, 3, 7, and 21.
21 and 25 share no common factors aside from 1.
All numbers have factors. Some numbers have some of the same factors as other numbers. These are known as common factors. The largest of these is known as the greatest common factor, or GCF.The factors of 30 are:1, 2, 3, 5, 6, 10, 15, 30The factors of 42 are:1, 2, 3, 6, 7, 14, 21, 42The common factors are:1, 2, 3, 6The Greatest Common Factor:GCF = 6
To find the common factors of 42 and 231, we first need to find the prime factorization of each number. The prime factorization of 42 is 2 x 3 x 7, and the prime factorization of 231 is 3 x 7 x 11. The common factors of 42 and 231 are the prime numbers that appear in both factorizations, which are 3 and 7. Therefore, the two common factors of 42 and 231 are 3 and 7.