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14 Nov 2020, 13:56
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B
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81% (00:45) correct
19%
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Is p positive?
(1) The square of p is positive
(2) |p| - p is positive
(1) The square of p is positive
(2) |p| - p is positive
Hi! could someone help me out, I'm struggling with this question because my professor said it is answer E but i believe it could be answer B
14 Nov 2020, 14:01
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Is p positive?
(1) The square of p is positive.
p^2 > 0 only gives us that p is not 0. Not sufficient.
(2) |p| - p is positive
|p| - p > 0.
|p| > p.
This is only possible when p is negative (if p is positive or 0, then |p| = p). Sufficient.
Answer: B
(1) The square of p is positive.
p^2 > 0 only gives us that p is not 0. Not sufficient.
(2) |p| - p is positive
|p| - p > 0.
|p| > p.
This is only possible when p is negative (if p is positive or 0, then |p| = p). Sufficient.
Answer: B
General Discussion
14 Nov 2020, 14:05
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Thank you for the explanation! It was what I thought as well 
