home *** CD-ROM | disk | FTP | other *** search
- Path: usage.csd.unsw.oz.au!metro!munnari.oz.au!uunet!mcsun!hp4nl!sci.kun.nl!cs.kun.nl!hansm
- From: hansm@cs.kun.nl (Hans Mulder)
- Newsgroups: comp.misc
- Subject: Re: ISBN checksum
- Message-ID: <3564@wn1.sci.kun.nl>
- Date: 21 May 91 11:27:13 GMT
- References: <1991May19.022623.2905@solbourne.com>
- Sender: root@sci.kun.nl
- Organization: University of Nijmegen, The Netherlands
- Lines: 12
-
- In <1991May19.022623.2905@solbourne.com> imp@solbourne.com (Warner Losh) writes:
- >Does anybody know the checksum procedure for ISBN book numbers?
-
- 1 * 1st digit + 2 * 2nd digit + 3 * 3rd digit + ... + 10 * 10th digit
- must be divisible by 11.
-
- Sometimes the last digit is an 'X'; that's a Roman digit with value 10.
-
- --
- Have a nice day,
-
- Hans Mulder hansm@cs.kun.nl
-