LSAT 2 | Section 4 | Logical Reasoning: Q15

LR Question 15 Explanation

QUESTION TEXT: In a large residential building, there is a rule that no pets…

QUESTION TYPE: Necessary Assumption

CONCLUSION: The residents’ proposal to allow pets was voted down.

REASONING: The residents were trying to pass their proposal and failed.

ANALYSIS: The stimulus tells us that in order for there to be a vote, a petition must get the signatures of 10% of the residents. So for any proposal to be voted down it must first gather signatures. That is the necessary assumption.

It’s possible for the proposal to fail without a vote (if there aren’t enough signatures.)

___________

1. CORRECT. If they didn’t do this, there could not be a vote.
2. It is necessary that this did not occur. We needed 10% or more to sign.
3. For a proposal to be voted down, only 50.1% of those who voted would have to be against it.
4. If this were true, there is no way any proposal could lose once a vote were held since 10% support guarantees over 50% support in the vote. The argument requires that this answer choice not be true.
5. This contradicts the stimulus. If they don’t get enough signatures there will be no vote.

Recap: The question begins with “In a large residential building, there is a rule that no pets”. It is a Necessary Assumption question. Learn how to master LSAT Necessary questions on the LSAT Logical Reasoning question types page.