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01 May 2020, 03:09
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Difficulty:
25%
(medium)
Question Stats:
78% (02:00) correct
22%
(02:17)
wrong
based on 362
sessions
History
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Not Attempted Yet
In every case of political unrest in a certain country, the police have discovered that some unknown person or persons organized and fomented that unrest. Clearly, therefore, behind all the cases of political unrest in that country there has been a single mastermind who organized and fomented them all.
The flawed reasoning in the argument above most closely parallels that in which one of the following?
(A) Every Chicago driver has a number on his or her license, so the number on some Chicago driver’s license is the exact average of the numbers on all Chicago drivers’ licenses.
(B) Every telephone number in North America has an area code, so there must be at least as many area codes as telephone numbers in North America.
(C) Every citizen of Edmonton has a social insurance number, so there must be one number that is the social insurance number for all citizens of Edmonton.
(D) Every loss of a single hair is insignificant, so no one who has a full head of hair at twenty ever becomes bald.
(E) Every moment in Vladimir’s life is followed by a later moment in Vladimir’s life, so Vladimir’s life will never end.
The flawed reasoning in the argument above most closely parallels that in which one of the following?
(A) Every Chicago driver has a number on his or her license, so the number on some Chicago driver’s license is the exact average of the numbers on all Chicago drivers’ licenses.
(B) Every telephone number in North America has an area code, so there must be at least as many area codes as telephone numbers in North America.
(C) Every citizen of Edmonton has a social insurance number, so there must be one number that is the social insurance number for all citizens of Edmonton.
(D) Every loss of a single hair is insignificant, so no one who has a full head of hair at twenty ever becomes bald.
(E) Every moment in Vladimir’s life is followed by a later moment in Vladimir’s life, so Vladimir’s life will never end.
TheStoryteller
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Joined: 25 Apr 2020
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GMAT 1: 790 Q50 V51
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01 May 2020, 04:43
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The argument goes like someone or some people are responsible for the unrest, so one person must be responsible for it all. I would like to state the flaw as Some = 1. Option C has the same flaw in reasoning.
(A) Every Chicago driver has a number on his or her license, so the number on some Chicago driver’s license is the exact average of the numbers on all Chicago drivers’ licenses.
-- Wrong. Average is irrelevant.
(B) Every telephone number in North America has an area code, so there must be at least as many area codes as telephone numbers in North America.
--Wrong. Doesn't follow the analogy.
(C) Every citizen of Edmonton has a social insurance number, so there must be one number that is the social insurance number for all citizens of Edmonton.
--Correct. Follows the Some/All = 1 flaw.
(D) Every loss of a single hair is insignificant, so no one who has a full head of hair at twenty ever becomes bald.
-- Wrong Analogy as it says 1(hair)= insignificant.
(E) Every moment in Vladimir’s life is followed by a later moment in Vladimir’s life, so Vladimir’s life will never end.
-- Wrong.
(A) Every Chicago driver has a number on his or her license, so the number on some Chicago driver’s license is the exact average of the numbers on all Chicago drivers’ licenses.
-- Wrong. Average is irrelevant.
(B) Every telephone number in North America has an area code, so there must be at least as many area codes as telephone numbers in North America.
--Wrong. Doesn't follow the analogy.
(C) Every citizen of Edmonton has a social insurance number, so there must be one number that is the social insurance number for all citizens of Edmonton.
--Correct. Follows the Some/All = 1 flaw.
(D) Every loss of a single hair is insignificant, so no one who has a full head of hair at twenty ever becomes bald.
-- Wrong Analogy as it says 1(hair)= insignificant.
(E) Every moment in Vladimir’s life is followed by a later moment in Vladimir’s life, so Vladimir’s life will never end.
-- Wrong.
01 May 2020, 09:53
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Prethinking
Every case of Y is dependent on X, so all cases cases of Y are due to X.
(A) Every Chicago driver has a number on his or her license, so the number on some Chicago driver’s license is the exact average of the numbers on all Chicago drivers’ licenses. - average is wrong
(B) Every telephone number in North America has an area code, so there must be at least as many area codes as telephone numbers in North America. - as many area codes is wrong
(C) Every citizen of Edmonton has a social insurance number, so there must be one number that is the social insurance number for all citizens of Edmonton. - Correct
(D) Every loss of a single hair is insignificant, so no one who has a full head of hair at twenty ever becomes bald. - first and second clause are not dependent in the same way as in the argument
(E) Every moment in Vladimir’s life is followed by a later moment in Vladimir’s life, so Vladimir’s life will never end. -first and second clause are not dependent in the same way as in the argument
Every case of Y is dependent on X, so all cases cases of Y are due to X.
(A) Every Chicago driver has a number on his or her license, so the number on some Chicago driver’s license is the exact average of the numbers on all Chicago drivers’ licenses. - average is wrong
(B) Every telephone number in North America has an area code, so there must be at least as many area codes as telephone numbers in North America. - as many area codes is wrong
(C) Every citizen of Edmonton has a social insurance number, so there must be one number that is the social insurance number for all citizens of Edmonton. - Correct
(D) Every loss of a single hair is insignificant, so no one who has a full head of hair at twenty ever becomes bald. - first and second clause are not dependent in the same way as in the argument
(E) Every moment in Vladimir’s life is followed by a later moment in Vladimir’s life, so Vladimir’s life will never end. -first and second clause are not dependent in the same way as in the argument
