If b is positive, is ab positive?
1. \(a^2b>0\)Since we are given b is positive,
if a is either positive or negative, the expression \(a^2b>0\) holds true.
Case 1: a=-3, b=2 Here, ab is negative
Case 2: a=3, b=2 Here, ab is positive(Insufficient)
2. \(a^2+b=13\)Since we are given b is positive,
if a is either positive or negative, the expression \(a^2+b=13\) holds true.
Case 1: a=-3, b=5 Here, ab is negative
Case 2: a=3, b=5 Here, ab is positive(Insufficient)
Even combining both the statements, we will be left with two options
in the first one - both a and b are positive
in the second one - a is negative and b is positive. (Insufficient)
(Option E)
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