Minimum bet
- Input
- Dupla Sena, 6 dezenas
- Expected output
- 1 em 15.890.700 por sorteio
The same chance applies to both the first and the second draw.
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Dupla Sena odds
On Dupla Sena you mark 6 to 15 numbers inside the range of 1 to 50. On the minimum bet of 6 numbers, the chance of matching one draw is 1 in 15,890,700, the result of C(50,6). What sets it apart is that every contest runs two independent draws, not just one.
The same chance applies to both the first and the second draw.
The maximum allowed covers C(15,6) simple games per draw.
The lowest tier already pays out from three correct numbers.
With a simple 6-number bet, the odds of hitting the jackpot are 1 in 50,063,860. Marking more numbers raises the probability in proportion to the games covered.
On the minimum 6-number bet, the chance of matching either of the two draws is 1 in 15,890,700, the exact result of C(50,6).
They double the attempts, not the chance of any single draw: the same ticket is checked against two independent draws of 1 in 15,890,700 each, with no extra cost.
By simple combination, C(50,6), applied separately to each of the two draws in the contest.
Marking the maximum 15 covers 5,005 games and brings each draw's chance to about 1 in 3,175, the best ratio among Caixa's single-urn lotteries.
| Hits | Odds | Probability |
|---|---|---|
| 6 | 1 in 15,890,700 | 6.29e-6% |
| 5 | 1 in 60,192 | 1.66e-3% |
| 4 | 1 in 1,120 | 8.93e-2% |
| 3 | 1 in 60 | 1.67% |
The odds use the standard hypergeometric model of lotteries: the chance of matching exactly k numbers combines the drawn and the not-drawn numbers within the game's universe.