Question

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Is the set of multiples of 4 closed under addition? Explain why or provide a counterexample if not.

A.
Yes, because the sum of any two multiples of 4 is also a multiple of 4.

B.
Yes, because the sum of any two multiples of 4 is also a multiple of 8.

C.
No, and a counterexample is ���������4 + (���������8) = ���������12.

D.
No, and a counterexample is 26 + 16 = 42.

Answer 1

@texaschic101 @chosenmatt

Answer 2

hmmmmmmm.....

Answer 3

yes.any multiple of is also a multiple of 4 which is A