作者ooopppeeennn (open)
看板Grad-ProbAsk
标题[问题] 离散数学
时间Tue Mar 17 10:10:15 2009
(a)Find the ordinary generating function of the sequence (a0,a1,a2...)
where ar is the number of ways of selecting r objects from a set
of six distinct objects , where each object can be selected no
more than thrive.
(b)From the generating function found in part (a) ,determine the number
of outcomes when three indistinguishable dice are rolled
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