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Lottery Odds Calculator

Calculate Lottery Odds

Formula

Main odds = C(n, k) = n! / (k! x (n-k)!). With bonus ball: Total odds = C(n, k) x bonus pool size.

Frequently Asked Questions

How are lottery odds calculated?
Lottery odds use combinations: C(n, k) = n! / (k! x (n-k)!) for the main draw. If there is a bonus ball, the main combinations are multiplied by the bonus pool size.
What are typical lottery odds?
For a 6/49 lottery, the odds are 1 in 13,983,816. For Powerball (5/69 + 1/26), the odds are approximately 1 in 292,201,338.

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