C(N,n) notatsiyasi N ning n ga nisbatan kombinatsiya raqamiga tegishli ekanligini tushunaman. Bunday holda soddalashtirish oddiy, shuning uchun uni batafsilroq tushuntiraman: C(N+1,n+1) / C(N,n) = (. (N+1)! / (n+1)!·(N+1-n+1))!). ) / (N! / (n!·(N-n)!) ) = =(N+1)!··n-n)! / (n+1)!·N·n-n)! ) =(N+1)!·n! / (n+1)!·n!·n! (n+1)! (n+1)! (n+1)! (n+1)! (n+1)! (n+1)! (n+1)! (n+1)! (n+1)! (n+1)! (n+1)! (
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