LSAT 109 – Section 3 – Question 08

LSAT 109 - Section 3 - Question 08

December 2000

You need a full course to see this video. Enroll now and get started in less than a minute.

Ask a tutor

Target time: 1:30

This is question data from the 7Sage LSAT Scorer. You can score your LSATs, track your results, and analyze your performance with pretty charts and vital statistics - all with a Free Account ← sign up in less than 10 seconds

Question
QuickView		 Type Tags Answer
Choices		 Curve Question
Difficulty		 Psg/Game/S
Difficulty		 Explanation
PT109 S3 Q08
+LR
Must be true +MBT
Quantifier +Quant
A
80%
168
B
6%
163
C
10%
160
D
4%
161
E
0%
162
139
150
162
 +Medium 148.18 +SubsectionMedium

J.Y.’s explanation

You need a full course to see this video. Enroll now and get started in less than a minute.

Most people invest in the stock market without doing any research of their own. Some of these people rely solely on their broker’s advice, whereas some others make decisions based merely on hunches. Other people do some research of their own, but just as often rely only on their broker or on hunches. Only a few always do their own research before investing. Nonetheless, a majority of investors in the stock market make a profit.

Summary
Most people who invest don’t do their own research. Of this group, some rely on their broker and others on instinct. A minority of people who invest conduct their own research. Of this group, some occasionally do their own research, while others always do their own research. Most people (of all those who invest) make a profit.

Notable Valid Inferences
Less than half of the people who invest in the stock market do their own research. Some people who don’t do their own research make a profit.

A
Some people who make a profit on their investments in the stock market do so without doing any research of their own.
This must be true. If most people who invest don’t do any research, and most people who invest also profit, there must be some people who belong to both groups. In other words, there must be overlap, as both groups encompass more than half of all people who invest.
B
Most people who invest in the stock market either rely solely on their broker or make decisions based merely on hunches.
This could be false. Most people who invest don’t do their own research; of this majority, some rely on their broker and others on hunches. There could be a third sub-group that relies on something other than a broker or hunches. We can’t assume these are the only sub-groups.
C
Some people who do investment research on their own, while just as often relying on their broker or on hunches, make a profit in the stock market.
This could be false. We don’t know how large the group of people who do some research while also relying on brokers or hunches is, but we do know they belong to the minority of people who do their own research. They could also be in the minority who don’t profit.
D
Most people who invest in the stock market without doing any research of their own make a profit.
This could be false. We know some people who invest without doing research make a profit—we have no reason to believe most of them do.
E
Most people who rely solely on their broker rather than on hunches make a profit in the stock market.
This could be false. We know most people who invest don’t do their own research: within this group, some people make a profit and some rely solely on their broker. We don’t know if these groups overlap and how many people (if any) who rely solely on their broker make a profit.

Take PrepTest

Review Results

LSAT PrepTest 109 Explanations

Section 1 - Logical Reasoning

Section 2 - Reading Comprehension

Section 3 - Logical Reasoning

Section 4 - Logical Reasoning

Get full LSAT course

Leave a Reply