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If, for all x and y, x # y = x*y^2, which of the following is equal to

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Bunuel
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If, for all x and y, x # y = x*y^2, which of the following is equal to [#permalink] If, for all x and y, x # y = x*y^2, which of the following is equal to   08 May 2019, 02:27
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E

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If, for all x and y, x # y = x*y^2, which of the following is equal to 3 # 4?

A. 4 # 3
B. 1 # 6
C. 2 # 6
D. 12 # 1
E. 12 # 2
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E
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Re: If, for all x and y, x # y = x*y^2, which of the following is equal to [#permalink] If, for all x and y, x # y = x*y^2, which of the following is equal to   08 May 2019, 03:33
Bunuel wrote:
If, for all x and y, x # y = x*y^2, which of the following is equal to 3 # 4?

A. 4 # 3
B. 1 # 6
C. 2 # 6
D. 12 # 1
E. 12 # 2



3 # 4= 48
IMO E ; 12 #2 ; 12 * 4 ; 48
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Re: If, for all x and y, x # y = x*y^2, which of the following is equal to [#permalink] If, for all x and y, x # y = x*y^2, which of the following is equal to   10 May 2019, 17:36
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Bunuel wrote:
If, for all x and y, x # y = x*y^2, which of the following is equal to 3 # 4?

A. 4 # 3
B. 1 # 6
C. 2 # 6
D. 12 # 1
E. 12 # 2



3 # 4 = 3 x 4^2 = 3 x 16 = 48

We see that answer choice E is 12 x 2^2 = 12 x 4 = 48.

Answer: E
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Re: If, for all x and y, x # y = x*y^2, which of the following is equal to [#permalink] If, for all x and y, x # y = x*y^2, which of the following is equal to   08 Dec 2023, 11:52
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x # y = x*\(y^2\)

To find 3 # 4 we need to compare what is before and after # in 3 # 4 and x # y
=> We need to replace x with 3 and y with 4 in 12 in x # y = x*\(y^2\) to get the value of 3 # 4

=> 3 # 4 = 3 * \(4^2\) = 3 * 16 = 48 = 12 * 4 = 12 * \(2^2\) = 12 # 2

So, Answer will be E
Hope it helps!

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Re: If, for all x and y, x # y = x*y^2, which of the following is equal to [#permalink]
08 Dec 2023, 11:52
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Bunuel
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