Setup and Rule Diagrams

[nzLSAT]

Hello,

I am finding the rule, "Folk is not on any tape numbered exactly one higher than a tape that has any rock on it," to be a little confusing to understand. When I first read it, I thought the rule would be "F - R" when listing the rules, not that R and F can't be together. Is there a way you could possibly simplify the language for me to understand the rule better?

Thank you!

Looking at the previous post regarding this rule, I am still a little confused about it. I understand that folk can't come immediately on the next tape following rock (but can still come after it on a different tape), but I am still confused on why they couldn't be on the same tape?

[Robert Carroll]

nz,

That's perfectly acceptable, and Rachael's post right before your first one confirms it:

Note that because we are talking about tape numbers, we can have rock and folk on the same tape without a problem.

Robert Carroll

[veeo@20]

Hey. I have read the questions and responses about rule 4 but I am still confused about it. Could you please explain it? I keep seeing it as an FR not block. I would just like the wordings simplified. Thank you.

[Paul Popa]

Hi Veeo,

For sure! Rule 4 is a tricky one involving the folk and rock genres. It says:

"Folk is not on any tape numbered EXACTLY ONE HIGHER than a tape that has any rock on it."

We know there are four tapes total, and each tape has two sides. That means the following:

If rock is on tape 1, folk cannot go anywhere on tape 2. It is free to be on any other tape, however.
If rock is on tape 2, folk cannot go anywhere on tape 3. It is free to be on any other tape, however.
If rock is on tape 3, folk cannot go anywhere on tape 4. It is free to be on any other tape, however.
If rock is on tape 4, the rule doesn't apply because there is no tape 5.

So overall, the rule is saying that wherever there is a rock, the tape immediately after that tape can't have any folk. Hope this helps!

[veeo@20]

Hi Veeo,

For sure! Rule 4 is a tricky one involving the folk and rock genres. It says:

"Folk is not on any tape numbered EXACTLY ONE HIGHER than a tape that has any rock on it."

We know there are four tapes total, and each tape has two sides. That means the following:

If rock is on tape 1, folk cannot go anywhere on tape 2. It is free to be on any other tape, however.
If rock is on tape 2, folk cannot go anywhere on tape 3. It is free to be on any other tape, however.
If rock is on tape 3, folk cannot go anywhere on tape 4. It is free to be on any other tape, however.
If rock is on tape 4, the rule doesn't apply because there is no tape 5.

So overall, the rule is saying that wherever there is a rock, the tape immediately after that tape can't have any folk. Hope this helps!

Yes, thank you.

[Brennan365]

Hello,

I had a question about number 8 which says "which of the following must be true." Why can't B be the answer? I see where C could be true but I don't understand why it MUST be true. Would B not work as well? it breaks no rules.
JFHR
JFHR

Thank you

[Luke Haqq]

Hi Brennan365!

Regarding answer choice (C), suppose Tape 2 had two sides of rock. One thing we know is that "Folk is not on any tape numbered exactly one higher than a tape that has any rock on it." This means there's no folk on tape 3. In addition, we know that at least one of the sides of Tape 1 contains jazz, so at most one side of that tape could contain folk. Since folk can't go in Tape 3 and can only occupy at most one side of Tape 1, that means that at least one of the folk occurrences must be on Tape 4, as noted in answer choice (C).

Regarding answer choice (B), suppose Tape 2 had two sides of folk. Based off that, a variety of things could be true, but this question stem asks for what must be true. Just because Tape 2 has two sides of folk doesn't mean that Tape 3 has at least one side of hip hop. For example, Tape 3 could have rock on both sides, and Tapes 1 and 4 could have jazz on one side and hip hop on the other. If that example works, it shows that answer choice (B) doesn't have to be true, making it incorrect for a must be true question.