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08 Jan 2023, 02:36
Kudos
Bookmarks
B
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:
65% (00:46) correct
35%
(00:51)
wrong
based on 37
sessions
History
Date
Time
Result
Not Attempted Yet
What is the value of r ?
(1) \(r^3-r^2=0\)
(2) \(r=-r\)
(1) \(r^3-r^2=0\)
(2) \(r=-r\)
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
08 Jan 2023, 05:58
Kudos
Bookmarks
Bunuel
Statement 1
\(r^3-r^2=0\)
\(r^2(r-1)=0\)
r = 0; r = 1
As we are getting two values of r, the statement is not sufficient.
Statement 2
r = -r
This can happen only for 0.
Therefore r = 0.
Sufficient.
Option B
