Q22

[andrewgong01]

Hi

For this question, on the answer key, it deduced that (L,S) must be either first or second in a cloud. This in turn means that (FM) is a cloud for slots 3 and 4. This in turn forces "J" to be in 3 or 4.

The part I am not seeing is how we concluded (L,S) goes in 1 and 2. I know that the first rule forces L in 1 and 2 but how did we conclude that "S" must now also fall into 1,2. From here, when I use this fact, I am able to see why "c" is the correct answer since R has to be on the bus at M and M has to be after the second slot and hence "R" must have been on the bus when the bus stopped at "S", which, at the latest, was the second stop. However, I am not sure how we concluded this fact that "S" must also be in 1 or 2.

Also, would you categorize this game as a sequencing with twist/2d or a grouping one because I thought this would be grouping but it felt more like a sequencing twist problem

[ohthatpatrick]

S has to be 1 or 2 because the question stem says that G gets off 2nd, and it says that G is still on board when we reach S.

If S were the 3rd or 4th stop, and G got off 2nd, then G would not have still been on board when the bus reached S.

Does that make sense?

I would categorize the game as 3D Ordering, since we're basically putting 4 things in 4 spots, but there are two layers of information to keep track of.

But mostly I would categorize this game as uniquely awful because it makes so much use of the idea of "still on board".

That translates into something annoying.

When we say 'Greg is still on board when the van reaches Simcoe', we're saying that "Greg either gets out WITH Simcoe or AFTER Simcoe".