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Odds Calculator is the most complex software to calculate all probabilities (odds) for any lotto game and horse racing. It covers regular lotto games (e.g. 6 of 49), Keno, Powerball, Mega Millions, Euromillions, CA SuperLotto Plus, etc. The calculations are based on the hypergeometric probability distribution. The odds are calculated as k of m in p from N. The calculations, unlike in any other program, are performed as exactly and as at least. More clearly, let's suppose a lotto 6/49 game. The lottery draws 6 winning numbers. The player must play exactly 6 numbers per ticket. But the player can choose to play a pool of 10 favorite numbers. What is the probability to get 4 of 6 in 10 from 49? The odds: 1 in 90. The calculations, unlike in any other program, are performed as exactly and as at least. The general hypergeometric formula for the as exactly case: P(m of k in s from n) = [C(n, k)] / C(s, m) * C(n-s, k-m) The hypergeometric distribution probability formula has restrictions. Some cases are impossible; e.g. exactly 1 of 6 in 10 from 10. This piece of software runs the extra mile and puts together multiple cases and does calculate precisely the odds as at least situations. Most common lotto games draw 6 winning numbers most commonly from a field of 49 numbered balls. OddsCalc.EXE does handle such lottos, plus games that draw 4 winning numbers, or 5, or 7 winning numbers, etc. You can calculate the odds for countless situations, such as 39 from 49 or 50 from 55, etc. The program requires just a few parameters. They are easy to understand and explained in detail on the input screens. Say, you want to calculate all possible odds for a 6-49 lotto game, with no pool of extra numbers (i.e. calculate the odds for a 6-number pool, exactly the number of winning lotto numbers drawn by the lottery commission). The biggest lotto number: 49; How many lotto numbers per combination: 6; How many lotto numbers in the pool: 6.