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08 Dec 2018, 10:03
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Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
45%
(medium)
Question Stats:
53% (01:08) correct
47%
(01:07)
wrong
based on 90
sessions
History
Date
Time
Result
Not Attempted Yet
Is x = 4?
Statement 1: x^2 = 16
Statement 2: x = (y^2)/7; y is real
09 Dec 2018, 08:56
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Question : Is x = 4?
Statement 1: x^2 = 16
x =+/-4
NOT SUFFICIENT
Statement 2: x = (y^2)/7; y is real
x can have many values based on values of y.
NOT SUFFICIENT
Combined:
from statement 1: x=+/-4
from statement 2: x>0 as x = y^2/7
So, x = 4
SUFFICIENT
Statement 1: x^2 = 16
x =+/-4
NOT SUFFICIENT
Statement 2: x = (y^2)/7; y is real
x can have many values based on values of y.
NOT SUFFICIENT
Combined:
from statement 1: x=+/-4
from statement 2: x>0 as x = y^2/7
So, x = 4
SUFFICIENT
17 Sep 2019, 12:38
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This is not a good quality question. Please specify the source.
