What is the highest common factor of 84 and 210?

Answer 1

The factors of 84 are:

1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84

The factors of 210 are:

1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210

The Greatest Common Factor:

GCF = 42

Answer 2

The highest common factor of 84 and 210 is 42. To find the highest common factor, you can use the method of prime factorization. Break down both numbers into their prime factors: 84 = 2^2 * 3 * 7 and 210 = 2 * 3 * 5 * 7. Identify the common prime factors and multiply them together to get the highest common factor, which in this case is 2 * 3 * 7 = 42.

Answer 3

It is not possible to give a sensible answer to this question. The highest common factor (HCF) refers to a factor that is COMMON to two or more numbers. You have only one number in the question!