Dua Kali Binomial


[OSP 2010] Nilai dari \sum \limits_{j=0}^n \binom{n}{j} \sum \limits_{i=0}^j \binom{j}{i}8^i adalah …

Solusi:

\sum \limits_{j=0}^n \binom{n}{j} \sum \limits_{i=0}^j  \binom{j}{i}8^i= \sum \limits_{j=0}^n \binom{n}{j}9^j=10^n

Jawab: 10^n

About ardiantoarsadi

don't look for miracles it will come

Posted on Juni 7, 2010, in SOAL DAN SOLUSI and tagged . Bookmark the permalink. 2 Komentar.

  1. Wah rumus apa tu..??!!! Gak mudeng…

  2. Ga mengerti uy..

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