|Posted: June 20, 2005, 1:47 pm - IP Logged|
I use a different Root Sum.
Last digit of the Sum.
That isn't Root Sum!!
We call that Sum Last Digit. I have been using that for over a year, but Todd just added it recently to the Deflate programs.
There are sums which is simply adding the digits together, there are Root Sums which mean that you keep adding the digits together to get a one digit sum, and then there are Sum Last Digit where all you look at is the ones digit of the sum. I like that one because the columns are all equal (22 x 10), whereas the other methods are not equal.
I think most if not all of this is explained in my Blog.