Logical Reasoning

PT108 · S3 · Q18 Chelas and Stelma are required

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Chelas and Stelma are required to leave their respective stations immediately to pursue any prisoner who attempts to escape from their sector.

Statements

conditional (any)

prisoner attempts → must leave station to escape pursue immediately

conditional (unless)

not pursuing → not allowed to leave prisoner station until replacement

facts

May 11, 9pm, C & S just finished a 5-9pm shift, and their replacements arrived.

C had violated the rules. S had not.

Evaluate

If C violated the rules then he either 1. failed to pursue a prisoner that attempting to escape or 2. left his station for some reason other than pursuing a prisoner

Since S followed the rules, she 1. pursued any prisoner that tried to escape 2. otherwise did not leave station until replacement showed up.

Goal

Since we're looking for a Must Be False, we'll need to flip those.

We need to hear that C "pursued every escapee and never left otherwise", or that S .

18.

If the statements above are true, each of the following could be true EXCEPT:

  1. Chelas and Stelma were at

    Compatible

    This doesn't hit any of the things we're looking for: C: pursued every escapee / never left otherwise S: failed to pursue an escapee / left for some other reason It's possible that someone tried to escape around 7pm. S pursued (following the rules). C stayed behind (breaking them). S returned with the prisoner by 8pm and thus they were both back at their stations at 9pm. C broke a rule, but S didn't.

    5% picked this

  2. Stelma left her station before

    Compatible

    This doesn't hit any of the things we're looking for: C: pursued every escapee / never left otherwise S: failed to pursue an escapee / left for some other reason It's possible that someone tried to escape around 7pm. S pursued (following the rules). C stayed behind (breaking them). S returned with the prisoner by 8pm and thus they were both back at their stations at 9pm. S left, but C didn't. So C broke a rule and S didn't.

    18% picked this

  3. Chelas left his station before

    Compatible

    This doesn't hit any of the things we're looking for: C: pursued every escapee / never left otherwise S: failed to pursue an escapee / left for some other reason It's possible that no one during this shift tried to escape. Thus neither C nor S should have left their station during this shift. If C did but S did not, then C broke a rule and S didn't.

    8% picked this

  4. Correct

    A prisoner attempted to escape

    Why this is right

    According to this, both C & S broke a rule. When a prisoner tries to escape, they're supposed to pursue. They if C & S never left their station, then they would have both broken that rule. This must be false, since we were told that S didn't violate any rule.

    Skill tested: Must be False · how this choice captures the argument's function is the move to repeat next time.

    64% picked this

  5. A prisoner attempted to escape

    Compatible

    This doesn't hit any of the things we're looking for: C: pursued every escapee / never left otherwise S: failed to pursue an escapee / left for some other reason It's possible that someone tried to escape around 7pm. S pursued (following the rules). C stayed behind (breaking them). S got back and stashed the prisoner back in his cell by 8pm. Then, C left his station around 8:15pm to just "take a stroll / clear his mind". C would have broken the rules, and S would have followed them.

    5% picked this

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