LSAT 149 – Section 1 – Question 18
LSAT 149 - Section 1 - Question 18
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Question QuickView |
Type | Tags | Answer Choices |
Curve | Question Difficulty |
Psg/Game/S Difficulty |
Explanation |
---|---|---|---|---|---|---|---|
PT149 S1 Q18 |
+LR
| Must be true +MBT Conditional Reasoning +CondR | A
6%
157
B
2%
156
C
29%
158
D
6%
157
E
57%
166
|
153 160 168 |
+Hardest | 143.093 +SubsectionEasier |
Summary
The stimulus can be diagrammed as follows:

Notable Valid Inferences
The standards committee and the awards committee cannot both have a quorum.
A
If the general assembly does not begin at 6:00 P.M. today, then the awards committee has a quorum.
This could be false. If the general assembly does not begin at 6:00 PM, we know that the standards committee doesn’t have a quorum, but it could be the case that the awards committee doesn’t have a quorum either.
B
If the standards committee does not have a quorum, then the awards committee has a quorum.
This could be false. It is possible for neither committee to have a quorum.
C
If the general assembly begins at 6:00 P.M. today, then the standards committee has a quorum.
This could be false. We know that if the standards committee has a quorum, then the general assembly will begin at 6:00 PM. (C) reverses the sufficient and necessary conditions.
D
If the general assembly does not begin at 7:00 P.M. today, then the standards committee has a quorum.
This could be false. If the general assembly does not begin at 7:00 PM, we know that the awards committee doesn’t have a quorum, but it could be the case that the standards committee doesn’t have a quorum either.
E
If the standards committee has a quorum, then the awards committee does not have a quorum.
This must be true. As shown below, by chaining the conditional claims, we see that if the standards committee has a quorum, then the awards committee does not have a quorum.

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LSAT PrepTest 149 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 - 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
Section 3 - 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
- Question 26
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