I do not understand this problem can someone please help me? Here is the question : Classify as true or false,?

and if false, give a counterexample. a) If 3 | n, then 9 | n.


b) If 10 | n, then 5 | n. c) If 2 | n and 4 | n, then 8 | nI do not understand this problem can someone please help me? Here is the question : Classify as true or false,?
a) well, 3 goes into 21, but 9 doesn't.


b) if 10 goes into something, then 5 has to


c) 2 and 4 go into 20, but 8 doesn't.





You just have to think of some examples like this.