[MATHEDCC] Divisibility Rules

Phil Mahler (mahlerp@admin.middlesex.cc.ma.us)
Thu, 02 Oct 1997 08:50:20 EST5EDT4,M4.1.0,M10.5.0

One of our staff in a math lab recently created a summary of
divisibility rules for dividing by the whole numbers 2,3,...,10.

example: A number is divisible by 2 if its ones digit is 0,2,4,6,8.

It states there is no rule for 7.
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Assuming the domain of discussion to be the whole numbers, is this true?

Phil Mahler
Middlesex CC
Bedford, MA

p.s. There is some ambiguity in the question, which I chose to not remove.
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