Which one of the following could be a complete and accurate list of the volunteers?

Maria on April 17, 2020

Why in/out

I really can't get how to determine that this was an in/out game. When I did it, I did consider the option but dismiss it because the "passage" just mentions that some out of the 7 parents will be volunteers, so it gives 7 spaces that could be filled, but it NEVER tell us something about having 7 parents and just X (< 7 )number of spots

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Shunhe on April 17, 2020

Hi @Maria-Marin,

We know it’s an in-out game because we know that there are two groups of people: volunteers, and not volunteers. The parents can either be in one group or the other, and there are rules about the parents that say that when one is “in,” another is “out,” and things like this. All of these indicate that it’s a in/out game. Hope this helps!

Payton on June 8, 2021

Hello, when it says -S --> V and the conditional -V ----> S that means that both S and V cannot be the in at the same time?

Emil on April 25 at 10:00PM

Hi, that does not mean they can't both be in, it means they can't both be out. The rule tells us that if one is out the other must be in, but tells us nothing about what happens if one is in.