Re: Why is 12345678, 85263147, etc. always divisible by 9?
- From: "Ignacio Larrosa Caņestro" <ilarrosaQUITARMAYUSCULAS@xxxxxxxxxxx>
- Date: Sun, 19 Feb 2006 15:11:22 +0100
En el mensaje:1140357815.354141.312390@xxxxxxxxxxxxxxxxxxxxxxxxxxxx,
TonyVarden <TonyVarden@xxxxxx> escribió:
You can arrange the digits from 1 to 8 in any combination & the
resulting number will always be divisible by 9.
ex:
12345678 / 9 = 1371742
85263147 / 9 = 9473683
etc.
Why?
Don't know the divisibility rule fby 9?
A number is divisible by 9 iif the sum of its digits (in base 10) is
multiple of 9.
--
Saludos,
Ignacio Larrosa Cañestro
A Coruña (España)
ilarrosaQUITARMAYUSCULAS@xxxxxxxxxxx
.
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