need help 4 a complicated math question!!!!!!!!!!!!!!!!!!

yuanjolly

yer, itz a princeton question````i m sure itz B```and i think the one answer my question already got the explanation correctly.`````````````````````````````hope u can understand da question thoroughly

fly12404

if U speak in Chinese, I will understand this question throughly : )
I am still confused what exactly this question talks about..

yuanjolly

下午在LIB··没中文···不好意思··Cn/k = Cn/(n-k) 无论n取任何值 k和n-k种的组合数都一样多这句话就是能说明(1)的问题····
1说得是无论TOPPING的数量是2或者是N-2·也就是上面的K 或者N-K， 而这种组合是无限的···