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D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
45%
(medium)
Question Stats:
33% (00:27) correct
67%
(00:41)
wrong
based on 6
sessions
History
Date
Time
Result
Not Attempted Yet
Is it true that exactly two of the three sentences I, II, and III are true?
(1) I is true and exactly one of I and III is true.
(2) II is true and exactly one of II and III is true.
Source: Nova Data Sufficiency Bible
I am not sure about the OA (see my next post).
(1) I is true and exactly one of I and III is true.
(2) II is true and exactly one of II and III is true.
Source: Nova Data Sufficiency Bible
I am not sure about the OA (see my next post).
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02 Nov 2011, 07:25
Kudos
Bookmarks
Here's my take:
The answer to this question is 'yes' when exactly two of the three are true. The answer is 'no' when it's not true that exactly two of the three are true.
(1) I is true and exactly one of I and III is true
From this we can conclude that I is true, III is false. But we know nothing about II.
Insufficient.
(2) II is true and exactly one of II and III is true
Similarly, we can conclude that II is true, III is false, and we know nothing about I.
(1) + (2)
I is true. III is false. II is true. III is false.
Sufficient.
C
The answer to this question is 'yes' when exactly two of the three are true. The answer is 'no' when it's not true that exactly two of the three are true.
(1) I is true and exactly one of I and III is true
From this we can conclude that I is true, III is false. But we know nothing about II.
Insufficient.
(2) II is true and exactly one of II and III is true
Similarly, we can conclude that II is true, III is false, and we know nothing about I.
(1) + (2)
I is true. III is false. II is true. III is false.
Sufficient.
C
03 Nov 2011, 03:21
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nonameee
I agree with your logic. Each statement alone gives me 'may be' which makes the statement insufficient. I would say the answer is (C) too. I would like to know how they have explained their OA.
