To show you how to calculate the Distances filter for a Pick 3 number here a step by step example.
Step 1: Divide the number into separate digits: 472 => 4 7 2 Step 2: Calculate the distance between each digit and the next (the last digit with the first): 4 to 7 = 3 7 to 2 = 5 2 to 4 = 2 Step 3: Combine the filters to a string: 3 5 2 = 352