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How to Calculate Lottery Odds
Formula
Lottery odds use combinations: C(n,k) = n!/(k!(n-k)!), multiplied by the bonus ball pool if applicable.
For Powerball (5 from 69 + 1 from 26), jackpot odds are about 1 in 292.2 million.
Common use cases:
- Calculate odds for Powerball or Mega Millions
- Compare odds across lottery games
- Understand probability mathematics
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