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20 Apr 2017, 23:15
Kudos
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C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
25%
(medium)
Question Stats:
76% (00:47) correct
24%
(00:54)
wrong
based on 72
sessions
History
Date
Time
Result
Not Attempted Yet
If n is a positive integer, is n + 1 a prime?
(1) n is a prime number.
(2) n is even.
(1) n is a prime number.
(2) n is even.
Pure algebraic questions like this one are no longer part of the GMAT Data Sufficiency syllabus.
For relevant Data Sufficiency questions, please check the Data Sufficiency forum:
Data Sufficiency Forum
Data Sufficiency Forum
21 Apr 2017, 06:58
Kudos
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Statement 1: n is a prime number
2+1=3 - yes
7+1=8 - no
Statement 1 is insufficient
Statement 2: n is even
2+1=3 - yes
8+1=9 - no
Statement 2 is insufficient
1&2
2+1=3 is the only case that fits; therefore, answer choice "C".
2+1=3 - yes
7+1=8 - no
Statement 1 is insufficient
Statement 2: n is even
2+1=3 - yes
8+1=9 - no
Statement 2 is insufficient
1&2
2+1=3 is the only case that fits; therefore, answer choice "C".
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