Logical ReasoningDifficulty: Easy

PT145 S4 Q13 Explanation

Most people who are skilled banjo

A free, expert breakdown of this official LSAT Logical Reasoning question.

TopicsMust be True

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Stimulus

Most people who are skilled banjo players are also skilled guitar players. But most people who are skilled not skilled banjo players.

What this question is testing

Must be True

Your task

Break the argument into its conclusion and evidence, then do exactly what the question stem asks with that structure.

Common trap

Answers that sound relevant to the topic but don't connect to the argument's actual reasoning.

Winning move

Predict what a right answer must do, then test each choice against the conclusion-evidence gap.

Reading along? Open the full official question in LawHub — we show a fragment here and keep the reasoning in our own words.

The question
13.

If the statements above are true, which one of the following must

Answer choices

  1. Contradicted6% picked this

    There are more people who are skilled at playing both the guitar and the banjo than there are people who are skilled at playing

    The people who do guitar and banjo are a minority (under 50%) of the total guitar playing group. So the number of people skilled only at guitar has to be bigger than the number of people skilled at both.

  2. Out of Scope4% picked this

    A person trying to learn how to play the guitar is more likely to succeed in doing so than is a person trying to

    Out of Scope: more likely to succeed This is a Must Be True question and there's no way we can invent ideas about which instrument one is more likely to succeed on.

  3. Unsupported Comparison: more skill1% picked this

    Playing the guitar takes more skill than playing the

    Just like (B), the idea of takes more skill is completely out of scope, and we could never derive that idea from facts that are purely mathematical in nature.

  4. Correct82% picked this

    There are more people who are skilled at playing the guitar than there are people who are skilled

    Why this is right

    Let's say that there are x people who are good at banjo and guitar. We are told that x > 50% of skilled banjoists. We are told that x < 50% of skilled guitarists. That means that skilled guitarists has to be a bigger number. If I say, "Whoa, I can't pay $3000 a month for that apartment. That's more than half my monthly income" and my friend Regina says, "That's less than half of my monthly income", we can infer two things: - Regina's a jerk - Regina makes more money per month than I do

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

  5. Contradicted7% picked this

    There are more people who are skilled at playing the banjo than there are people who are skilled

    The correct answer is the opposite of this idea, so check out the breakdown of the stimulus and the explanation for (C) again to remind yourself why there have to be more guitarists than banjo players.

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