LSAT 11 – Section 2 – Question 12

LSAT 11 - Section 2 - Question 12

June 1994

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Question
QuickView		 Type Tags Answer
Choices		 Curve Question
Difficulty		 Psg/Game/S
Difficulty		 Explanation
PT11 S2 Q12
+LR
Must be true +MBT
A
1%
156
B
10%
160
C
18%
160
D
4%
158
E
67%
166
146
157
167
 +Harder 148.469 +SubsectionMedium

We should recognize this as a must be true question, as it asks: If the statements above are true, which one of the following must also be true of trees in the Centerville Botanical Gardens?

This is a stimulus full of comparisons and conditionals. The first sentence gives us a conditional indicated by all, which tells us that if you are tulip trees, then you are older than all the maples. Next, we learn that most, but not all, of the sycamores are also older than all the maples. The last sentence gives us our final conditional that if you are a maple, then you are older than all the dogwoods. Interesting! I think it can be helpful to use some of our sequencing game skills here, and remember that if A is before B, and B is before C, then A is before C. In this case, we are getting a lot of comparison of tree ages, and should think about how they can chain together; I’d expect that the correct answer will be an inference from chaining together these comparisons. Specifically we can form a chain (T AND (most)S → older than M → older than D) from which we can infer that all the tulip trees and most of the sycamores are older than all the dogwoods. Let’s see if this ends up being useful in the answer choices.

Answer Choice (A) This must be false, as we’ve been told all tulips are older than all maples which are older than all dogwoods.

Answer Choice (B) This could be false, as we’ve only been told about the age of the majority of sycamores.

Answer Choice (C) Same as C, we don’t know enough for this to be a certain inference

Answer Choice (D) This could be false as, although we know that some sycamores and all tulips are both older than all maples, we don’t know how the ages of these two groups compare.

Correct Answer Choice (E) Since we’ve been told that not all sycamores are older than all maples, but all tulip trees are, then there must be some sycamores that are younger than all tulip trees.

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LSAT PrepTest 11 Explanations

Section 1 - Logic Games

Section 2 - Logical Reasoning

Section 3 - Reading Comprehension

Section 4 - Logical Reasoning

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