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For the rules of piraten kapern, see GameHelpPiratenKapern
Probabilities
Binomial formula
n! ร pแต(1 โ p)โฟโปแต k!(n-k)!
n: number of trails (dice thrown) k: number of successes (dice with a face value)p: probability of success (of a die face value)
Example
Probability of throwing 3 with 5 dice:
5! ร (โ )ยณ ร (1 โ โ )โตโปยณ 3!(5-3)!
= 5ร4ร3ร2ร1 ร (โ )ยณ ร (โ )ยฒ 3ร2ร1 ร 2ร1
= 10 ร (โ )ยณ ร (โ )ยฒโ 0.0321 or 3.21%
2 dice
| In words | In maths | Percentage |
|---|---|---|
| Probability of no skulls | P(X = 0) = (โ )ยฒ | โ 69.4% |
| Probability of one skull | P(X = 1) = 2 ร (โ ) ร (โ ) | โ 27.8% |
| Probability of two skulls | P(X = 2) = (โ )ยฒ | โ 2.78% |
8 dice
| In words | In maths | Percentage |
|---|---|---|
| Probability of no skulls | P(X = 0) = (โ )โธ | โ 23.3% |
| Probability of one skull | P(X = 1) = 8 ร (โ ) ร (โ )โท | โ 37.2% |
| Probability of two skulls | P(X = 2) = 28 ร (โ )ยฒ ร (โ )โถ | โ 26.0% |
| Probability of three skulls | P(X = 3) = 56 ร (โ )ยณ ร (โ )โต | โ 10.4% |
| Probability of four skulls | P(X = 4) = 70 ร (โ )โด ร (โ )โด | โ 2.60% |
| In words | In maths | Percentage |
|---|---|---|
| Probability of one or more skulls | P(X โฅ 1)
= 1 โ P(X = 0) = 1 โ (โ )โธ |
โ 76.7% |
| Probability of two or more skulls | P(X โฅ 2)
= 1 โ [ P(X = 0) + P(X = 1) ] = 1 โ [ (โ )โธ + 8 ร (โ ) ร (โ )โท ] |
โ 39.5% |
| Probability of three or more skulls | P(X โฅ 3)
= 1 โ [ P(X = 0) + P(X = 1) + P(X = 2) ] = 1 โ [ (โ )โธ + 8 ร (โ ) ร (โ )โท + 28 ร (โ )ยฒ ร (โ )โถ ] |
โ 13.5% |
| Probability of four or more skulls | P(X โฅ 4)
= 1 โ [ P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3) ] = 1 โ [ (โ )โธ + 8 ร (โ ) ร (โ )โท + 28 ร (โ )ยฒ ร (โ )โถ + 56 ร (โ )ยณ ร (โ )โต ] |
โ 3.07% |

