Question 252882
Here is the question:
If n < 0, which of the following could be true? 
I. 2n < n^2 
II. 2n < n 
III. n^2 < – n 
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sometimes it is easier to plug in possible values: Let n = -1 and then check n = -1/2. This is a common SAT question and technique for solving them.
First n = -1.
(i) 2(-1) < (-1)^2 - -> TRUE
(ii) 2(-1) < (-1) - - > TRUE
(iii) (-1)^2 < -(-1) - -> FALSE
Second n = -1/2
(i) 2(-1/2) < (-1/2)^2 - -> TRUE
(ii) 2(-1/2) < (-1/2) - - > TRUE
(iii) (-1/2)^2 < -(-1/2) - -> FALSE
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So only i and ii are true, which is choice [C]