2024-09-23

Talföljder

{a_{i}}_{i}^{\infty}, \frac{a_{i + 1}}{a_{i}} = C \neq 1, i = 1, 2, \dots

\sum_{i = i}^{n} a_{i} = n * a_{1}

(\binom{n}{k}) = \frac{n!}{k! (n - k)!}

_{n} P_{k} = \frac{n!}{(n - k)!}