If Pang works on only one day, which one of the following must be true?

Maria on June 20 at 10:50PM


I understand why B is right buy someone could please explain why D is wrong and how B is better than D? Thank youuu

1 Reply

Ben on June 20 at 11:17PM

Hi Maria-Marin, thanks for the question.

With P going once, all other variables must occur twice.

Answer choice D is incorrect because Pang could be placed Thursday without issue. You can try filling that out. Notice that this doesn't lead to any rule violations.

On the other hand, answer choice B. If we didn't have M in Saturday, then we would have M in Thursday and Friday. This would use all of our M's and L's (because L is necessary for M). Since P can never go Saturday, the only two variables left to fill Saturday are N and Q. This isn't enough.

I hope this helps. Please let me know if you have any other questions!