Math Filters Sums Pairs The Sums filter is a so called "math filter". Math filters are created through calculations. You get the sum of a number by adding up the digits within that number. To show you how to calculate the Sums filter for a Pick 2 number here a step by step example.
Step 1: Divide the 18 into separate digits: 18 => 1 8 Step 2: Add up the digits: 1 + 8 = 9
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