David Hobby wrote: > > Finally, 11 and 7 have divisibility tests which are poor and > awful respectively. > The divisibility test for 11 is simpler than the divisibility test for 4, at least for "small" numbers. It's not obvious for a non-mathematician that 7264972 is divisible by 4, but anyone who learned the div tests for 4 and 11 will easily see that this number is a multiple of both.
And the div test for 8 is horrible. Alberto Monteiro _______________________________________________ http://www.mccmedia.com/mailman/listinfo/brin-l
