Posted by . on Monday, July 15, 2013 at 6:16pm.
3,4,9,12,16,18
two integers are related if they share a factor other than 1. which of the following numbers is related to every number in the list above.
A 10
B 9
C 6
D 4
E 3
Is it 10? Since like 30,40,90,120,180 all have factor of 10?

Math  Steve, Monday, July 15, 2013 at 7:04pm
No, it's 6 because every number in the list has 2 or 3 as a factor, as does 6.

Math  ., Monday, July 15, 2013 at 7:13pm
That makes so much sense now, thank you.
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