Geomania.Org Forumları

Fantezi Cebir => Fantezi Cebir => Konuyu başlatan: stuart clark - Ocak 26, 2013, 02:19:37 ös

Başlık: binomial sum
Gönderen: stuart clark - Ocak 26, 2013, 02:19:37 ös

Using Combinatorial  How can i find binomial sum of

(http://latex.codecogs.com/gif.latex?\hspace{-16}%20\bf{\binom{30}{0}.\binom{30}{10}-\binom{30}{1}.\binom{30}{11}+\binom{30}{2}.\binom{30}{12}-........................+\binom{30}{20}.\binom{30}{30}=}$)

To Moderator I have edited it and there is alternate plus and minus sign

Thanks

Başlık: Ynt: binomial sum
Gönderen: senior - Ocak 26, 2013, 10:25:15 ös

Between the first and second terms, is there a minus or plus?