Q2

[hnadgauda]

For question 2, is the fastest way to approach this problem to go through the answer choices one by one to see which one cannot be the fifth valve?

[ohthatpatrick]

If you're looking at your Relative Ordering Tree, you want to find someone who has
at least five before
or
at least four after

You can also save this question for after you've done the "If" questions as use previous work to locate people who you know CAN be in the 5th spot.