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QOTD#16 If p and x are non-negative numbers and y is a
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20 Nov 2016, 10:11
20 Nov 2016, 10:11
Expert Reply
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Question Stats:
51% (01:01) correct
48% (01:11) wrong based on 41 sessions
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If p and x are non-negative numbers and y is a non-positive number, then which of the following must be true?
Indicate all possible values.
A. \(px > xy\)
B. \(px > 0\)
C. \(pxy > -1\)
D. \(pxy\) ≤ \(0\)
E. \(px\) ≠ \(y\)
F. \(x\)≥ \(py\)
Indicate all possible values.
A. \(px > xy\)
B. \(px > 0\)
C. \(pxy > -1\)
D. \(pxy\) ≤ \(0\)
E. \(px\) ≠ \(y\)
F. \(x\)≥ \(py\)
Drill 4
Question: 10
Page: 294-295
Question: 10
Page: 294-295
Re: QOTD#16 If p and x are non-negative numbers and y is a
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20 Nov 2016, 10:14
20 Nov 2016, 10:14
Expert Reply
Explanation
As soon as you see variables in the answer choices, set up your scratch paper to Plug In.
Start with easy numbers like p = 2, x = 3, and y = −4. Of the answer choices, all work except choice (C), which can be eliminated. Now plug in different numbers: Since the variables are described as non-negative and non-positive, try making p, x, and y all 0. Now choices (A), (B), and (D)
all yield false statements and can be eliminated. The correct answers are choices (D) and (F).
Hence options D and F are correct.
As soon as you see variables in the answer choices, set up your scratch paper to Plug In.
Start with easy numbers like p = 2, x = 3, and y = −4. Of the answer choices, all work except choice (C), which can be eliminated. Now plug in different numbers: Since the variables are described as non-negative and non-positive, try making p, x, and y all 0. Now choices (A), (B), and (D)
all yield false statements and can be eliminated. The correct answers are choices (D) and (F).
Hence options D and F are correct.
Re: QOTD#16 If p and x are non-negative numbers and y is a
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11 Oct 2021, 02:21
11 Oct 2021, 02:21
Hello from the GRE Prep Club BumpBot!
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Thanks to another GRE Prep Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).
Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
