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: 351 => 3 5 1 Step 2: Calculate the distance between each digit and the next (the last digit with the first): 3 to 5 = 2 5 to 1 = 4 1 to 3 = 2 Step 3: Combine the filters to a string: 2 4 2 = 242