From: Admin Tensor <lists@...>
Date: 2013-05-31T11:55:41+09:00
Subject: Re: Eloquent Ruby Kaprekar's Number

Alphonse 23 wrote in post #1110725:
> In short, for a Kaprekar number k with n-digits, if you square it and
> add the right n digits to the left n or n-1 digits, the resultant sum is
> k.

Hi,

Yes, Kaprekar number is good to be an exercise in creating a (Ruby)
code, but after googling it, what are the practical applications for
Kaprekar numbers?

Best regards,

Bill

P.S. Forgive me, if the discussion is rather off-topic from Ruby.

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