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registerincog
Joined: 16 Nov 2013
Last visit: 17 Dec 2014
Posts: 24
Location: United States
Concentration: Entrepreneurship, General Management
GPA: 3.49
Posts: 24
Updated on: 02 Aug 2014, 10:26
Originally posted by registerincog on 02 Aug 2014, 05:00.
Last edited by Bunuel on 02 Aug 2014, 10:26, edited 2 times in total.
Last edited by Bunuel on 02 Aug 2014, 10:26, edited 2 times in total.
Renamed the topic, edited the question and added the OA.
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
55%
(hard)
Question Stats:
56% (01:37) correct
44%
(02:08)
wrong
based on 117
sessions
History
Date
Time
Result
Not Attempted Yet
Is \(x\geq{y}\)?
(1) |x - y| = |x| - |y|
(2) |x - y| = x - y
(1) |x - y| = |x| - |y|
(2) |x - y| = x - y
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
Is \(x\geq{y}\)?
(1) |x - y| = |x| - |y|. If x = 1 and y = 0, then the answer is YES but if x = -1 and y = 0, then the answer is NO. Not sufficient.
(2) |x - y| = x - y. We know that |a| = a, when \(a\geq{0}\). Therefore, from |x - y| = x - y it follows that \(x-y\geq{0}\) --> \(x\geq{y}\). Sufficient.
Answer: B.
Check for more here: absolute-value-tips-and-hints-175002.html (Absolute Value: Tips and hints)
P.S. Please provide OA's when posting (rule 7 here: rules-for-posting-please-read-this-before-posting-133935.html). Thank you.
_________________
(1) |x - y| = |x| - |y|. If x = 1 and y = 0, then the answer is YES but if x = -1 and y = 0, then the answer is NO. Not sufficient.
(2) |x - y| = x - y. We know that |a| = a, when \(a\geq{0}\). Therefore, from |x - y| = x - y it follows that \(x-y\geq{0}\) --> \(x\geq{y}\). Sufficient.
Answer: B.
Check for more here: absolute-value-tips-and-hints-175002.html (Absolute Value: Tips and hints)
P.S. Please provide OA's when posting (rule 7 here: rules-for-posting-please-read-this-before-posting-133935.html). Thank you.
_________________
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