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01 Sep 2023, 01:30
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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:
35%
(medium)
Question Stats:
59% (01:01) correct
41%
(01:16)
wrong
based on 66
sessions
History
Date
Time
Result
Not Attempted Yet
Is \(\frac{a}{b} < 0\)?
(1) \(\frac{a^2 }{ b^3} < 0\)
(2) \(a*b^5 < 0\)
(1) \(\frac{a^2 }{ b^3} < 0\)
(2) \(a*b^5 < 0\)
01 Sep 2023, 02:24
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Is \(\frac{a}{b} < 0\)?
This would happen when both an and b have opposite sign.
(1) \(\frac{a^2 }{ b^3} < 0\)
Just tells us none is 0, and b<0.
Nothing about a.
Insufficient
(2) \(a*b^5 < 0\)
This shows both an and b are of opposite sign.
Exactly what we were looking for.
Sufficient
B
This would happen when both an and b have opposite sign.
(1) \(\frac{a^2 }{ b^3} < 0\)
Just tells us none is 0, and b<0.
Nothing about a.
Insufficient
(2) \(a*b^5 < 0\)
This shows both an and b are of opposite sign.
Exactly what we were looking for.
Sufficient
B
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