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25 Jul 2018, 21:52
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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:
15%
(low)
Question Stats:
88% (01:31) correct
12%
(01:24)
wrong
based on 90
sessions
History
Date
Time
Result
Not Attempted Yet
If x£y = 2(x^2)(y^3), which of the following represents possible values for (x,y) when x£y = 1,350?
A. (3, 5)
B. (5, 3)
C. (10, 5)
D. (13, 5)
E. (13, 50)
A. (3, 5)
B. (5, 3)
C. (10, 5)
D. (13, 5)
E. (13, 50)
Updated on: 25 Jul 2018, 22:19
Originally posted by StudiosTom on 25 Jul 2018, 22:09.
Last edited by StudiosTom on 25 Jul 2018, 22:19, edited 1 time in total.
Last edited by StudiosTom on 25 Jul 2018, 22:19, edited 1 time in total.
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If x£y = 2(x^2)(y^3), which of the following represents possible values for (x,y) when x£y = 1,350?
A. (3, 5) =2*9*125 -looks A high number ,no need to multiply
B. (5, 3) =2*25*27 =1350
C. (10, 5) -looks A high number ,no need to multiply
D. (13, 5) - looks A high number ,no need to multiply
E. (13, 50) -looks A high number ,no need to multiply
Answer:B
A. (3, 5) =2*9*125 -looks A high number ,no need to multiply
B. (5, 3) =2*25*27 =1350
C. (10, 5) -looks A high number ,no need to multiply
D. (13, 5) - looks A high number ,no need to multiply
E. (13, 50) -looks A high number ,no need to multiply
Answer:B
25 Jul 2018, 22:14
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Bunuel
Given
\(x£y = 2(x^2)(y^3)\)
we are looking for the value of \(x£y = 1,350?\)
So, \(2(x^2)(y^3) = 1350\)
Prime factorization of 1350 will provide us the value of x and y
\(1350 = 2*5^2*3^3\)
\(2(x^2)(y^3) = 2*5^2*3^3\)
The best answer is B.
