Editing MindPerformanceHacks 2fTestForDivisibility

= Hack #38: Calculate Mental Checksums = It's often useful to know whether one number is evenly divisible by another number. Here are some tricks that go beyond knowing whether a number is odd or even, or divisible by 10. == Additions and Suggestions == Concrete ideas to modify and expand this hack go here. == Discussion == Freeform discussion of this hack goes here. == Links == * Wikipedia "Divisor" article: http://en.wikipedia.org/wiki/Divisor * See also http://en.wikipedia.org/wiki/Divisibility_rule == Errata == Errata go here. == Hack Author == ["Ron Hale-Evans"] == Return to Main Book Page == This is a page for a hack from the book MindPerformanceHacks by ["Ron Hale-Evans"].

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