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23 Feb 2022, 03:30
Kudos
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D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
35%
(medium)
Question Stats:
72% (01:28) correct
28%
(01:42)
wrong
based on 39
sessions
History
Date
Time
Result
Not Attempted Yet
06 Mar 2022, 07:00
Kudos
Bookmarks
St(1)
(y-2)^2 > 9
y^2 + 4 - 4y - 9 > 0
(y-5)(y+1) > 0
=> y > 5 or y < -1
Since y> 0 we only have y > 5 hence sufficient
St(2)
(y-1)^2 > 4
y^2 + 1 - 2y - 4 > 0
(y-3)(y+1) > 0
=> y > 3 or y < -1
Since y> 0 we only have y > 3 hence sufficient
Option D
(y-2)^2 > 9
y^2 + 4 - 4y - 9 > 0
(y-5)(y+1) > 0
=> y > 5 or y < -1
Since y> 0 we only have y > 5 hence sufficient
St(2)
(y-1)^2 > 4
y^2 + 1 - 2y - 4 > 0
(y-3)(y+1) > 0
=> y > 3 or y < -1
Since y> 0 we only have y > 3 hence sufficient
Option D
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