Multiples of 72, like 72, 144, 216 and so on.
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The highest common factor of the numbers 30, 60 and 72 is 6.
To find the greatest common factor of two numbers, you first need to factorise those numbers. In this case: 72=3x3x2x2x2 91=7x13 The next step would be to find any common factors. As there are none, this means that the greatest common factor of 72 and 91 is 1.
You need at least two numbers to find a GCF.
The highest common factor of 36 and 72 is 36
No. As a general rule, factors cannot be larger than the numbers they are compared to.