What is the minimum number of groups that must be evaluated after the teachers?

zia305 on May 30, 2020

Explanation

Can someone please explain the right answer?

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BenMingov on May 31, 2020

Hi Zia305, thanks for the question.

After we examine the rules and combine them. We find that there are two options for the order between J, P, and L.

J - P - L or L - P - J

As for the rest of the sequence.

T is before M which is before L

T is also before N and P, which are directly adjacent to each other.

This means that M, L, N, and P must always come after the teachers at a minimum. And it is possible for J but not necessary. This is why the answer is four.

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