As with any lotto game, the most common event is the skip zero, i.e. a repeat from last game. In the case of Pick 3, 61% of games will have a repeat from the last drawn combination, so just a little bit of history required. (72%
OTOH, a pair from the last game repeats only about 16% of the time, so you can eliminate combinations with those pairs most of the time.
Good Luck!
