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Re: Four Digit Code Problem

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David Entwistle <qnivq.ragjvfgyr@ogvagrearg.pbz> writes:
> On Thu, 20 Aug 2026 12:51:34 GMT, James Dow Allen wrote:
>> (Is "casting out nines" still taught in school?)
>
> I don't recall "casting out nines" was taught, here in the UK, even when I 
> was at school from roughly 1964 - 1976. I don't think we were told the 
> divisibility rule for three, either.

We had casting out 9s in primary/middle school in the late 70s in London.

Phil
-- 
We are no longer hunters and nomads. No longer awed and frightened, as we have
gained some understanding of the world in which we live. As such, we can cast
aside childish remnants from the dawn of our civilization.
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Four Digit Code Problem David Entwistle <qnivq.ragjvfgyr@ogvagrearg.pbz> - 2026-08-20 10:45 +0000
  Re: Four Digit Code Problem David Entwistle <qnivq.ragjvfgyr@ogvagrearg.pbz> - 2026-08-20 11:06 +0000
    Re: Four Digit Code Problem Phil Carmody <pc+usenet@asdf.org> - 2026-08-27 19:08 +0300
  Re: Four Digit Code Problem ram@zedat.fu-berlin.de (Stefan Ram) - 2026-08-20 11:58 +0000
    Re: Four Digit Code Problem David Entwistle <qnivq.ragjvfgyr@ogvagrearg.pbz> - 2026-08-20 15:42 +0000
      Re: Four Digit Code Problem David Entwistle <qnivq.ragjvfgyr@ogvagrearg.pbz> - 2026-08-20 15:50 +0000
  Re: Four Digit Code Problem James Dow Allen <user4353@newsgrouper.org.invalid> - 2026-08-20 12:51 +0000
    Re: Four Digit Code Problem David Entwistle <qnivq.ragjvfgyr@ogvagrearg.pbz> - 2026-08-20 15:32 +0000
      Re: Four Digit Code Problem Charlie Roberts <croberts@gmail.com> - 2026-08-22 13:05 -0400
      Re: Four Digit Code Problem Phil Carmody <pc+usenet@asdf.org> - 2026-08-27 22:37 +0300

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