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08 Jul 2011, 21:42
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Difficulty:
45%
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Question Stats:
75% (01:00) correct
25%
(02:54)
wrong
based on 12
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\(\frac{2}{n} \frac{2}{n}\)
\(\frac{2}{4} > \frac{4}{n}\)
\(n > 4\)
4 0, so we can multiply by n
\(2 < \frac{1}{2}n < 3\)
Divide by 1/2
\(\frac{2}{1/2} < n < \frac{3}{1/2}\)
\(4 < n < 6\)
\(\frac{2}{4} > \frac{4}{n}\)
\(n > 4\)
4 0, so we can multiply by n
\(2 < \frac{1}{2}n < 3\)
Divide by 1/2
\(\frac{2}{1/2} < n < \frac{3}{1/2}\)
\(4 < n < 6\)
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04 Sep 2011, 06:28
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2/n < 1/2 < 3/n
make two equations and cross multiply
2/n < 1/2
4 < n
AND
1/2 < 3/n
n < 6
4 < n < 6
D .... ans
make two equations and cross multiply
2/n < 1/2
4 < n
AND
1/2 < 3/n
n < 6
4 < n < 6
D .... ans
04 Sep 2011, 13:18
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ssarkar
Which of the following is equivalent to the statement that 0.5 is between 2/n and 3/n？
(A) 1<n<6
(B) 2<n<3
(C) 2<n<5
(D) 4<n<6
(E) n>10
(A) 1<n<6
(B) 2<n<3
(C) 2<n<5
(D) 4<n<6
(E) n>10
They should have mentioned that n is +ve.
