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Q: What are the highest common factors of 42 and 63?

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To do this, the first step is to write the numbers as the product of their prime factors. In this case we have: 42 = 2x3x7 63 = 3x3x7 The next step is to identify common factors. In this case both numbers have a 3 and a 7 as factors. Take these numbers and multiply them together to find the HCF: 3x7 = 21 Thus the highest common factor of 42 and 63 is 21.

The three greatest factors of 126 are 42, 63 and 126. For them to be common, they need to be compared to another set of factors.

It is 21

The greatest common factor of 63, 28 and 42 is: 7

The highest common factor is 21

The highest common factor of 36 and 63 is 9

The highest common factor is 21

1 and 7

1 and 7

Just 1.

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.

The highest common factor is 9

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