Asked by .

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?
Answered by Steve
No, it's 6 because every number in the list has 2 or 3 as a factor, as does 6.
Answered by .
That makes so much sense now, thank you.