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06 Feb 2017, 07:48
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A
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
5%
(low)
Question Stats:
83% (01:03) correct
17%
(01:10)
wrong
based on 248
sessions
History
Date
Time
Result
Not Attempted Yet
Is xy > 6 ?
(1) 2 ≤ x ≤ 4 , 3 < y < 5
(2) x – y = 0
(1) 2 ≤ x ≤ 4 , 3 < y < 5
(2) x – y = 0
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
Updated on: 10 Feb 2017, 09:02
Originally posted by BrentGMATPrepNow on 06 Feb 2017, 11:06.
Last edited by BrentGMATPrepNow on 10 Feb 2017, 09:02, edited 1 time in total.
Last edited by BrentGMATPrepNow on 10 Feb 2017, 09:02, edited 1 time in total.
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Bunuel
Target question: Is xy > 6 ?
Statement 1: 2 ≤ x ≤ 4 , 3 < y < 5
The LEAST possible value of x is 2.
If it were possible for y to equal 3, then xy = (2)(3) = 6
However, it is NOT possible for y to equal 3, since the statement tells us that y is GREATER THAN 3.
So, the least possible value of xy must be greater than 6.
So, we can be certain that xy > 6
Since we can answer the target question with certainty, statement 1 is SUFFICIENT
Statement 2: x – y = 0
There are several values of x and y that satisfy statement 2. Here are two:
Case a: x = 3 and y = 3, in which case xy = (3)(3) = 9. In this case, xy IS greater than 6
Case b: x = 1 and y = 1, in which case xy = (1)(1) = 1. In this case, xy is NOT greater than 6
Since we cannot answer the target question with certainty, statement 2 is NOT SUFFICIENT
Answer: A
Cheers,
Brent
Xavipersonal
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06 Feb 2017, 12:26
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To me answer A makes the most sense.
I also assumed that GMATPrepNow meant A, not be. Correct me if I am wrong
I also assumed that GMATPrepNow meant A, not be. Correct me if I am wrong
