how to evalf this. - MaplePrimes

Question:how to evalf this.

Posted: Euclid 698

December 05 2010

question is : with(combinat): sum(numbcomb(80, x)*numbcomb(100, 27-x), x = 1 .. 27)

this cannot get the answer rather than add

of course the following is ok

tot := 0; for x to 27 do tot := tot+numbcomb(80, x)*numbcomb(100, 27-x) end do: tot

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