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05 Mar 2019, 02:47
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B
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
5%
(low)
Question Stats:
99% (00:23) correct
1%
(00:30)
wrong
based on 85
sessions
History
Date
Time
Result
Not Attempted Yet
For all numbers m and n, \(m◊n = \frac{m^2(m - n)}{n^2}\). What is the value of 3◊2 ?
A. 1/2
B. 9/4
C. 3/2
D. 3
E. 9
A. 1/2
B. 9/4
C. 3/2
D. 3
E. 9
05 Mar 2019, 03:05
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Bunuel
For all numbers m and n, \(m◊n = \frac{m^2(m - n)}{n^2}\). What is the value of 3◊2 ?
A. 1/2
B. 9/4
C. 3/2
D. 3
E. 9
A. 1/2
B. 9/4
C. 3/2
D. 3
E. 9
Given,
\(m◊n = \frac{m^2(m - n)}{n^2}\)
\(3◊2 = \frac{3^2(3 - 2)}{2^2}\)
\(3◊2 = \frac{9*1}{4}\)
\(3◊2 = \frac{9}{4}\)
B is the correct answer.
05 Mar 2019, 09:10
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Bunuel
For all numbers m and n, \(m◊n = \frac{m^2(m - n)}{n^2}\). What is the value of 3◊2 ?
A. 1/2
B. 9/4
C. 3/2
D. 3
E. 9
A. 1/2
B. 9/4
C. 3/2
D. 3
E. 9
substitute m=3 and n=2
\(m◊n = \frac{m^2(m - n)}{n^2}\)
we get
9/4
IMO B
