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17 Oct 2019, 01:53
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:
15%
(low)
Question Stats:
91% (01:23) correct
9%
(01:37)
wrong
based on 45
sessions
History
Date
Time
Result
Not Attempted Yet
Is it true that a > b ?
(1) a > –b
(2) b^2 – 4 > 0
(1) a > –b
(2) b^2 – 4 > 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
17 Oct 2019, 04:58
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Is it true that a > b ?
(1) a > –b
We do not know the signs of a and b..
If a =1 and b =2....b>a>-b
If a=2 and b=1...a>b>-b
If a=3 and b=-2....a>-b>b
(2) b^2 – 4 > 0
(b-2)(b+2)>0
Nothing about a
Combined..
\(b^2 – 4 > 0...b^2>4.....-2<b<2\)
If a =0 and b =1....b>a>-b
If a=2 and b=1...a>b>-b
Insuff
E
(1) a > –b
We do not know the signs of a and b..
If a =1 and b =2....b>a>-b
If a=2 and b=1...a>b>-b
If a=3 and b=-2....a>-b>b
(2) b^2 – 4 > 0
(b-2)(b+2)>0
Nothing about a
Combined..
\(b^2 – 4 > 0...b^2>4.....-2<b<2\)
If a =0 and b =1....b>a>-b
If a=2 and b=1...a>b>-b
Insuff
E
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