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The function f is defined for each positive three-digit

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Intern
Joined: 26 May 2008
Posts: 40
The function f is defined for each positive three-digit [#permalink]

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29 Jul 2008, 10:47
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The function f is defined for each positive three-digit integer n by f(n) = 2x3y5z , where x, y and z are the hundreds, tens, and units digits of n, respectively. If m and v are three-digit positive integers such that f(m)=9f(v), them m-v=?
(A)8
(B)9
(C)18
(D)20
(E)80
Director
Joined: 14 Aug 2007
Posts: 704

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29 Jul 2008, 18:56
Re: Numbers and Integers   [#permalink] 29 Jul 2008, 18:56
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The function f is defined for each positive three-digit

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