If U = {moms and dads attending an open house at their child's school} and subset M = {moms attending the open house}, what does M' represent?

Question

anonymous · Answer

Answers:
 {students attending the open house}
{dads attending the open house}
{moms who are also teachers at the open house}
none of the above

anonymous · Answer

I believe it is D: none of the above.

anonymous · Answer

Mr. @radar math wizard can you help?

anonymous · Answer

The only one that makes any sense, however, is the second one, assuming you are looking for the set of items that are in U and not M.

anonymous · Answer

thats what i thought too but that would be U and not M and the question askes for what M means.

anonymous · Answer

True, then I guess the only other logical answer is no answer.