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16 Feb 2015, 06:47
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E
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Difficulty:
45%
(medium)
Question Stats:
60% (01:35) correct
40%
(01:41)
wrong
based on 254
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16 Feb 2015, 08:25
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Statement 1: x could be 1, 3, 7, 12
Statement 2: x could 0, 1, 2, 4, 5, 7, 8, 11, 13 ...
If we combine both statements, x could be 1 or 7.
14 - 1 = 13, which is prime
14 - 7 = 7, which is prime
The correct answer is E.
Statement 2: x could 0, 1, 2, 4, 5, 7, 8, 11, 13 ...
If we combine both statements, x could be 1 or 7.
14 - 1 = 13, which is prime
14 - 7 = 7, which is prime
The correct answer is E.
shelrod007
Joined: 23 Jan 2013
Last visit: 16 Sep 2016
Posts: 99
Own Kudos:
Given Kudos: 41
Concentration: Technology, Other
Schools: Berkeley Haas
GMAT Date: 01-14-2015
WE:Information Technology (Computer Software)
16 Feb 2015, 11:45
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Is x a prime number?
Statement 1
(1) 14-x is prime = Set of prime numbers less than 14 { 2 ,3 ,5 ,7 , 11, 13 }
Therefore X = { 1 ,2 ,7 ,11 , 12 } , X may or may not be prime not sufficient
Statement 2 :
(2) X is not a multiple of 3
X can be { 1 , 2 ,4 ,5 , 7 , 8 .... } May or may not be prime .
Combining both statements also the answer may or may not be prime .
Hence E
Statement 1
(1) 14-x is prime = Set of prime numbers less than 14 { 2 ,3 ,5 ,7 , 11, 13 }
Therefore X = { 1 ,2 ,7 ,11 , 12 } , X may or may not be prime not sufficient
Statement 2 :
(2) X is not a multiple of 3
X can be { 1 , 2 ,4 ,5 , 7 , 8 .... } May or may not be prime .
Combining both statements also the answer may or may not be prime .
Hence E
