Highest common factor of 12 and 42?

Answer 1

There can be no such number.

Suppose x is the least common multiple (LCM) of these numbers. Then 2*LCM is also a common multiple and is greater. And then 3*LCM is a common multiple and greater still. And so on, for ever.

Answer 2

To find the greatest common factor of two numbers, you first need to split these numbers into their prime factors. For 12 and 42 this is:

12 = 2x2x3

42 = 2x3x7

The next step is to identify any common factors. In this case, both numbers have a 2 and a 3 as prime factors. Thus, to find the GCF, you need to multiply those numbers together:

2x3 = 6

So the GCF of 12 and 42 is 6.

Answer 3

The least common factor of any set of positive integers is 1.

Answer 4

The greatest common multiple of any set of integers is infinite.

Answer 5

The GCF is 6.

The least common factor of any set of integers is 1.

Answer 6

The GCF is 6.

Answer 7

The GCF is 6.

Answer 8

GCF of 12 and 42 is 6.

Answer 9

HCF(24, 42) = 6.

Answer 10

6