How do you know if the greatest common factor of two numbers is two just by looking at it?

Question

Mikayla Mcguire

Mathematics

25 September, 14:39

How do you know if the greatest common factor of two numbers is two just by looking at it?

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Answers (1)

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Ronnie Pennington · Answer 1

Well, you know just by looking at it because it ends in an even number. Like, the greatest common factor of 4 is 2, 1.) Because no other number can "go into it," and 2.) Because it's even.