If you cut the doubles in half....you basically have the following. I kept it simple for easy tracking purposes.

 The way its done is easy to understand ..... and track. Even though we use our computers to do a lot of the tracking.... its good to do it in our heads at the same time. Here it is....

 Basiclly...you can cut the Doubles into 2 groups by first taking out all the doubles that START with the digits 1,,,0,,,or 2 in it. That will give you 49 doubles and 3 trips 

          A.  This will be the 0,1,2 Doubles group

009, 117, 144, 199, 225, 000, 055, 118, 226, 244, 299, 001, 119, 155, 227, 002, 011, 066, 228, 255, 003, 111, 166, 229, 004, 022, 077, 112, 266, 005, 113, 122, 177, 006, 033, 088, 114, 222, 277, 007, 115, 133, 188, 223, 008, 044, 099, 116, 224, 233, 288

          The next group will be all the doubles that start with digits 3456789......the non- 012 group.

 

              B.  The 3,4,5,6,7,8,9, Doubles group

 334, 488, 668, 677, 335, 344, 399, 588, 669, 777, 336, 444, 499, 688, 778, 337, 355, 445, 599, 779, 788, 338, 446, 455, 699, 888, 339, 366, 447, 555, 799, 889, 448, 466, 556, 899, 377, 449, 557, 566, 999, 477, 558, 666, 333, 388, 559, 577

 

 So..... each of these will hit very close to 50/50. What little difference there is in the numbers is out weighted by the easy tracking system. It either starts with digits..... 0,1, or 2............. or not.  Thats it ....A or B