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The stem states that X and Y are positive integers. Have a

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The stem states that X and Y are positive integers. Have a [#permalink] New post 13 Jan 2007, 02:41
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A
B
C
D
E

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The stem states that X and Y are positive integers. Have a look at OE :)
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 [#permalink] New post 13 Jan 2007, 05:45
Ans should be A



4^x * (1/3) ^y

= (4^x) /(3^y)

(a) y= 2x

so, (4^x) /(3^y) = (4^x) /(3^2x)

= (4/9)^x <1 ( as x is a positive integer)

sufficient

(b) insufficient
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 [#permalink] New post 13 Jan 2007, 06:16
Of course it should be A. OE contradicts the stem :)
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 [#permalink] New post 13 Jan 2007, 06:40
Yes. It´s an A. (2) is clearly insuff and (1) is suff for the relation btw x and y given.
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 [#permalink] New post 13 Jan 2007, 09:06
OA should be A. :)
  [#permalink] 13 Jan 2007, 09:06
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The stem states that X and Y are positive integers. Have a

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