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help needed on this one

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Junior | Next Rank: 30 Posts
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Joined: Thu Sep 18, 2008 6:07 pm

help needed on this one

by jeegarm » Fri Oct 10, 2008 5:10 am
Q2:
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), then m-v = ?
A. 8
B. 9
C. 18
D. 20
E. 80
Answer:
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by Fab » Mon Oct 13, 2008 5:42 pm
I got an 8, what's the OA?
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by vishubn » Mon Oct 13, 2008 6:04 pm
hi

please refer to below threads

its been discussed before

https://www.beatthegmat.com/good-one-t15015.html
https://www.beatthegmat.com/function-pro ... html#83484

Vishu
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