Combinations Formula
Også kjent som: nCr Formula, Binomial Coefficient
C(n, r) = \binom{n}{r} = \frac{n!}{r!(n-r)!}
C(n,r) = n! / (r!(n-r)!)Hva den beregner
Counts the number of ways to choose r items from n, where ORDER DOES NOT MATTER.
variabler
| Symbol | Navn | Beskrivelse |
|---|---|---|
| n | Total Items | Total number of items |
| r | Items Chosen | Number of items selected |
Arbeidseksempler
1
C(10,3) = 10! / (3! × 7!)2
= (10×9×8) / (3×2×1) = 720/6 = 120Resultat: 120
Prøv en kalkulator
Relaterte formler
#combinatorics#probability#counting