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function Problem

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function Problem

by gmat009 » Wed Oct 01, 2008 5:17 pm
2. 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
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by schumi_gmat » Thu Oct 02, 2008 7:27 am
Hey gmat009,

Please post the OA so that it is easier to try
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by vishubn » Thu Oct 02, 2008 6:59 pm
oa is D

I have the same some issue solving this as well ??

Any thoguhts
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by stop@800 » Thu Oct 02, 2008 7:39 pm
You are changing the 10th digit by 3^2
so 10*2 will give u 20

I solved it sometime back also.
You will find detailed explanation in past posts.
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by mental » Sat Oct 04, 2008 8:31 am
can anyone post the link to solution
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