LSAT 69 – Section 4 – Question 21
LSAT 69 - Section 4 - Question 21
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Target time: 1:18
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Question QuickView |
Type | Tags | Answer Choices |
Curve | Question Difficulty |
Psg/Game/S Difficulty |
Explanation |
---|---|---|---|---|---|---|---|
PT69 S4 Q21 |
+LR
| Sufficient assumption +SA | A
53%
168
B
6%
157
C
4%
159
D
30%
163
E
7%
157
|
156 164 171 |
+Hardest | 148.326 +SubsectionMedium |
Video of JY doing this
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This question is difficult because of the obscuring of the premises and conclusion. Here's the premises and conclusion distilled, utilizing the skills we learned in our grammar lessons.
published --> prof. N promise to urge dean to promote S --> prof. N urge dean to promote S --> S promoted
_____________
import & well written --> S promoted
Reducing it, the argument goes:
published --> S promoted
_____________
import & well written --> S promoted
Formulaically, we want to supply the missing premise: import & well written --> published
But, the LSAC did something new this time. They gave us: import --> published
That actually works!
To see why, let's think about an analogous argument.
If you buy milk, then you will use cash. Therefore, if you go to store & gas station, you will use cash.
Formulaically, we want to supply the missing premise: if you go to store & gas station, you will buy milk. But, doesn't that feel a little redundant? What if I just said "if you go to store, you will buy milk."
That also allows us to validly draw the conclusion that "if you go to store & gas station, you will use cash."
In fact, it'll even allow us to validly draw the conclusion that "if you go to store & gas station & mars & russia, you will use cash."
Very clever, those LSAT writers
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LSAT PrepTest 69 Explanations
Section 1 - Logical Reasoning
- Question 01
- Question 02
- Question 03
- Question 04
- Question 05
- Question 06
- Question 07
- Question 08
- Question 09
- 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 2 - Logic Games
Section 3 - Reading Comprehension
- Passage 1 – Passage
- Passage 1 – Questions
- Passage 2 – Passage
- Passage 2 – Questions
- Passage 3 – Passage
- Passage 3 – Questions
- Passage 4 – Passage
- Passage 4 – Questions
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