From - Thu Oct 15 16:29:18 1998
From: fredh@ix.netcom.com (Fred W. Helenius)
Newsgroups: rec.puzzles
Subject: Re: Math Puzzle
Date: Wed, 14 Oct 1998 16:42:29 GMT
Organization: ICGNetcom
answrman@idt.net (Jeff G) wrote:
>Among all 3-digit numbers in which no digit appears more than once,
>there is one special trait shared by the numbers:
> 195
> 265
> 498
>and ONE other 3-digit number.
>(1) What is the trait?
>(2) What is the 4th number which shares this trait?
SPOILERS below...
SPOILERS:
(1) They are three-digit numbers ABC such that AB/BC = A/C, i.e., you
can "cancel" the Bs.
(2) The remaining number is 164: 16/64 = 1/4.
--
Fred W. Helenius