I watched the video explanation numerous times and cannot figure out how the correct answer came about. I think the sequencing and grouping games are the hardest ones for me. Can someone help me
Okay, you want the MAX amount of films. And once you show G, you can no longer show L.
On Friday, G or L must be the final show. If it is G, L will be barred for Saturday - so you'd rather have L as the final show of Friday (so you can get the most amount of shows by having L on Saturday too.)
Now G needs to be somewhere, since all shows must appear at least once. So it will go at the end of Saturday. L can go on Saturday as well. G is at the end of Saturday, so L is still before it (earlier on Saturday).
You want as many films as possible, so L can go on Thursday too. Also, H can go on Friday.
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On Friday, G or L must be the final show. If it is G, L will be barred for Saturday - so you'd rather have L as the final show of Friday (so you can get the most amount of shows by having L on Saturday too.)
Now G needs to be somewhere, since all shows must appear at least once. So it will go at the end of Saturday. L can go on Saturday as well. G is at the end of Saturday, so L is still before it (earlier on Saturday).
You want as many films as possible, so L can go on Thursday too. Also, H can go on Friday.
Your final picture should look like this:
L H L
H L G
_ _ _
Th F S
Let me know if it's still unclear.