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25 Dec 2017, 01:22
Kudos
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E
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:
84% (00:43) correct
16%
(01:07)
wrong
based on 37
sessions
History
Date
Time
Result
Not Attempted Yet
Is the average (arithmetic mean) of positive integers n and p greater than z?
(1) z > 0
(2) The sum of n and p is 14.
(1) z > 0
(2) The sum of n and p is 14.
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
25 Dec 2017, 17:45
Kudos
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Bunuel
Question: is \(\frac{n+p}{2}>z\)?
(1) z > 0. So z can be any positive integer, but there is no info on n or p; insufficient.
(2) The sum of n and p is 14. So \(\frac{n+p}{2}=14/2=7\), but z could be greater than 7 or less than 7; insufficient.
(1)+(2). We know that z is a positive integers and that the average of n and p is 7, but we cannot determine if the average is greater/less than z; insufficient.
(E) is the answer.
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