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20 Aug 2020, 09:13
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B
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
65%
(hard)
Question Stats:
46% (01:35) correct
54%
(01:38)
wrong
based on 139
sessions
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Not Attempted Yet
Is x < 0?
(1) x^2 ≥ 3x
(2) x^2 ≤ 5x
Subscribe Topic-wise UN-bundled Video course. CHECK FREE Sample Videos
(1) x^2 ≥ 3x
(2) x^2 ≤ 5x
Source: https://www.GMATinsight.com
Subscribe to my YouTube Channel for FREE resource (1000+ Videos)
Subscribe Topic-wise UN-bundled Video course. CHECK FREE Sample Videos
20 Aug 2020, 09:44
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target check whether x is -ve
#1
x^2 ≥ 3x
possible values of x are when +ve x =0 or x>=3
and when x is -ve for all value x<=0
insufficient
#2
x^2 ≤ 5x
possible at
0<=x<=5
so x is not -ve ; sufficient
OPTION B
#1
x^2 ≥ 3x
possible values of x are when +ve x =0 or x>=3
and when x is -ve for all value x<=0
insufficient
#2
x^2 ≤ 5x
possible at
0<=x<=5
so x is not -ve ; sufficient
OPTION B
GMATinsight
Is x < 0?
1) x^2 ≥ 3x
2) x^2 ≤ 5x
Subscribe Topic-wise UN-bundled Video course. CHECK FREE Sample Videos
1) x^2 ≥ 3x
2) x^2 ≤ 5x
Source: https://www.GMATinsight.com
Subscribe to my YouTube Channel for FREE resource (1000+ Videos)
Subscribe Topic-wise UN-bundled Video course. CHECK FREE Sample Videos
22 Aug 2020, 10:12
Kudos
Bookmarks
GMATinsight
(1) x^2 ≥ 3x
= |x| ≥ \(\sqrt{3x}\)
Insufficient.
(2) x^2 ≤ 5x
= |x| ≤ \(\sqrt{5x}\)
Insufficient.
Taken together:
\(\sqrt{3x}\) ≤ x ≤ \(\sqrt{5x}\)
Which means x > 0
Why is C not the answer?
