Logical ReasoningDifficulty: Hard

PT6 S2 Q10 Explanation

All of John’s friends say

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

TopicsMust be True

Keep going in LSAT Lab

  • Save & drill this skill — build targeted practice sets from questions like this one

  • Video walkthroughs — watch every question solved step by step

  • 81 official LSATs — as questions, timed sections & full-length tests

Start practicing free

Free to start

Full official LSAT questions are available through LawHub. This page provides LSAT Lab's explanation, strategy, and review tools without republishing the full official question.

Stimulus

All of John’s friends say they know someone who has smoked 40 cigarettes a day for the past 40 years and yet who is really fit and well. John does not know anyone like that and it unique among his friends in this respect.

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
10.

If the statements in the passage are true, then which one of the following must

Answer choices

  1. Trap2% picked this

    Smokers often lie about how much

  2. Trap7% picked this

    People often knowingly exaggerate without intending

  3. Trap13% picked this

    All John’s friends know the same lifelong

  4. Trap7% picked this

    Most of John’s friends are not telling

  5. Correct71% picked this

    Some of John’s friends are not telling

    Why this is right

    Answer E is correct.

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

Continue the review in LSAT Lab

Save this question, watch the video walkthrough, and drill similar questions in your LSAT Lab account.

Save and practice this skill
LSAT Lab

Turn this review into a targeted study plan.

Save this question, drill more like it, watch the video walkthrough, and track your progress in your LSAT Lab account.

Start practicing free