Really Pick 3 can be made into sort of a Roulette game of Red or Black. The Doubles could be made Green... and you lose.
Doubles hit 27% of the time in Pick 3.... Singles hit 72% of the time. So.... about 1 outa 4 times you will lose if you play singles only.
But.... wait until a double hits ....then play your Singles ..the probability is better that your Single will hit. When it does ...it will be in one of 2 groups RED or Black. That's as close to 50/50 as you will get in the Pick 3 game.
Here are all 120 single numbers divided into 2 groups.... They are all the Singles that contain either or both of the digits Zero or ONE......and the OTHERS...that do not contain a Zero or ONE.
Green (All doubles and Trips..you lose !) #90+10
Red ( Others group....contain no digits zero/one) #56 234, 235, 236, 237, 238, 239, 245, 246 ,247, 248, 249 ,256, 257, 258, 259 ,267, 268, 269, 278, 279, 289, 345 ,346, 347, 348, 349, 356, 357, 358, 359, 367, 368, 369, 378, 379, 389, 456, 457, 458 ,459, 467, 468, 469, 478 ,479, 489, 567, 568, 569, 578, 579, 589, 678, 679, 689, 789,
Black (Zero/One group) #64
012,013,014, 015,016,017, 018, 019, 023, 024 ,025, 026 ,027, 028 ,029, 034, 035, 036, 037, 038 ,039 ,045 ,046, 047, 048, 049, 056, 057, 058 ,059, 067, 068, 069, 078, 079, 089, 123 ,124, 125 ,126 ,127, 128, 129, 134, 135, 136, 137 ,138, 139 ,145, 146, 147, 148, 149 ,156, 157, 158, 159, 167, 168, 169, 178, 179, 189