Math Filters Alt Sums Pick 4 The Alt Sums filter is a so called "math filter". Math filters are created through calculations. In this case starting with the highest digit of the number the digits are alternately subtracted and added to create the Alt Sums between 0 and 9. To show you how to calculate the Alt Sums filter for a Pick 4 number here a step by step example.
Step 1: Divide the 1000 into separate digits: 1000 => 1 0 0 0 Step 2: Sort the digits from highest to lowest: 1 0 0 0 => 1 0 0 0 Step 3: Subtract and add the digits alternately: 1 - 0 + 0 - 0 = 1
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