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Explanations

PT21.S3.Q1

SECTION 1 · rc

PASSAGE 1
Question 1 Question 2 Question 3 Question 4 Question 5 Question 6

PASSAGE 2
Question 7 Question 8 Question 9 Question 10 Question 11 Question 12 Question 13

PASSAGE 3
Question 14 Question 15 Question 16 Question 17 Question 18 Question 19 Question 20 Question 21

PASSAGE 4
Question 22 Question 23 Question 24 Question 25 Question 26 Question 27 Question 28

SECTION 2 · lr

Question 1 Question 2 Question 3 Question 4 Question 5 Question 6 Question 7 Question 8 Question 9 Question 10 Question 11 Question 12 Question 13 Question 14 Question 15 Question 16 Question 17 Question 18 Question 19 Question 20 Question 21 Question 22 Question 23 Question 24 Question 25

SECTION 3 · lr

Question 1 Question 2 Question 3 Question 4 Question 5 Question 6 Question 7 Question 8 Question 9 Question 10 Question 11 Question 12 Question 13 Question 14 Question 15 Question 16 Question 17 Question 18 Question 19 Question 20 Question 21 Question 22 Question 23 Question 24 Question 25

SECTION 4 · rc

PASSAGE 1
Question 1 Question 2 Question 3 Question 4 Question 5 Question 6 Question 7 Question 8

PASSAGE 2
Question 9 Question 10 Question 11 Question 12 Question 13 Question 14 Question 15 Question 16

PASSAGE 3
Question 17 Question 18 Question 19 Question 20 Question 21

PASSAGE 4
Question 22 Question 23 Question 24 Question 25 Question 26 Question 27

PrepTest 21 - Section 3 - Question 1

Question

Explanation

Analytics

Show analysis

Everyone sitting in the waiting room of the school’s athletic office this morning at nine o’clock had just registered for a beginners tennis clinic. █████ █████ ███ ██████ ████ ███ ███████ ██ ███ ███████ ████ ████ ███████ ██ ████ ██████████ ██ ████████████ ██████ ██████ █████ ████████ ███ █ █████████ ██████ ███████

Chaining Conditionals

This stimulus features two statements that form a conditional chain, then tells us about three people who can be "fed into" the chain. I'm imagining this like a machine that takes people in the waiting room and turns them into unaccomplished people and it's making me laugh.

John and co. are all in the waiting room (of the school's athletic office this morning at nine o'clock 🙄). If you're in the waiting room, you're registered (for the thing). If you're registered, you're not accomplished (at playing tennis).*

The anticipation is quite straightforward here (especially because this is Question 1, so were aren't expecting any sneaky tricks):

These three fools are not accomplished tennis players.

*Here's the lesson on how to translate that "no" appropriately.

Analysis by MichaelWright

Show answer

If the statements above are █████ █████ ███ ██ ███ █████████ ████ ████ ██ ████ ██ ███ █████ ██ █████

None of the ██████ ███████ ██ ███ ██████████ ████████ ██████ ████ ███████ ██ ████ █████████ ███ ████ ██████ ███████

This is only wrong because "not being accomplished at tennis" ≠ "never played tennis." Maybe they've played once or twice. Maybe they've been playing for years and they're just really really bad.

Everyone sitting in ███ ██████████ ████████ ██████ ████ ███████ ██ ████ █████████ ██████████ ████ ███ █ █████████ ██████ ███████

This would be right if not for the word "only." We know these people registered for the clinic, but saying they only registered for the clinic means they didn't register for any other clinics. That's no good.

John, Mary, and ██████ ████ ███ ████ ██████ ███ ██████████ ███ █ █████████ ██████ ██████ ████ ████████

This is wrong because of the "only" phrase. If it said "John, Mary, and Teresa were people who registered for [the thing]," it'd be right.

We know these three registered; we don't know that other people didn't register.

John, Mary, and ██████ ████ ███ ████ ██████ ███████ ██ ███ ███████ ████ ██ ███ ██████████ ████████ ██████ ████ ███████ ██ ████ ██████████

This is wrong because of the "only" phrase. If it said "John, Mary, and Teresa were people sitting in the waiting room," it'd be right.

We know these three were in the room; we don't know that other people weren't in the room.

Neither John nor ██████ ██ ██ ████████████ ██████ ███████

Because we know John, Mary, and Teresa are garbage tennis players, it must be true that John and Teresa are garbage tennis players.

What about Mary? No one cares about Mary. By not mentioning Mary, (E) stops short of the full inference we could draw from the facts. But that's fine. The question stem did not ask for the complete set of inferences that could be drawn.

Difficulty

Question

93% of people who answer get this correct

This is a moderately difficult question.

CURVE

Score of students with a 50% chance of getting this right

25% 140

147

75% 153

Analysis

Question Stem Tags

Must be true

Stems that ask which answer choice "must be true." Related to Inference and MSS, but correct answers require 100% support with no assumptions of any kind. Learn more.

Stimulus Tags

Conditional reasoning

Stimuli that feature conditional and set logic (e.g. A → B, A is true, therefore B is true). Learn more.

Answer Popularity

Popularity Avg. score

150

155

154

149

93%

168

Question history

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