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27 Oct 2019, 22:54
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Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
95%
(hard)
Question Stats:
16% (01:51) correct
84%
(01:33)
wrong
based on 201
sessions
History
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Time
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Not Attempted Yet
If m and n are Integers, which of the following can be the result of \(\frac{mn}{m^2}*\sqrt{\frac{m^2}{n}}\)
A. -\(\sqrt{n}\)
B. \(\frac{nm}{\sqrt{n}}\)
C. \(\frac{m^2}{n}\)
D. All of the above
E. None of the above
A. -\(\sqrt{n}\)
B. \(\frac{nm}{\sqrt{n}}\)
C. \(\frac{m^2}{n}\)
D. All of the above
E. None of the above
GMATbuster's Collection
27 Oct 2019, 23:54
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\(\frac{mn}{m^2}\)∗\(\sqrt{\frac{m^2}{n}}\)
= \(\frac{m*n*\sqrt{m^2}}{m*m*\sqrt{n}}\)
= \(\frac{n* |m|}{m* \sqrt{n}}\) {Since |x|= \(\sqrt{x^2}\)}
= \(\sqrt{n}\) or -\(\sqrt{n}\)
(A) Ans
= \(\frac{m*n*\sqrt{m^2}}{m*m*\sqrt{n}}\)
= \(\frac{n* |m|}{m* \sqrt{n}}\) {Since |x|= \(\sqrt{x^2}\)}
= \(\sqrt{n}\) or -\(\sqrt{n}\)
(A) Ans
28 Oct 2019, 23:39
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Video solution is as follows:
gmatbusters
