| n(n−1)(n−2)...(n−k+1) | |||||||||
wykaz, ze | = | ? | ||||||||
| 1*2*3*4*...*k |
| n! | 1*2*3*...*(n−(k+1))*(n−k)*(n−(k−1))*...*(n−2)(n−1)n | ||||||||||
L= | = | = | = | |||||||||
| k!(n−k)! | k!(n−k)! |
| (n−k)! * (n−k+1)*...*(n−2)(n−1)n | (n−k+1) ... (n−2)(n−1)n | |||
= | = | = | ||
| k! (n−k)! | k! |
| n(n−1)(n−2) ... (n−k+1) | ||
= | =P, ... c.n.w. . ...  | |
| 1*2*3* ... *(k−1)k |
