將一張一元的鈔票,換成一分、二分和五分的硬幣,每種至少十枚,有多少種方案

數(shù)學人氣：429 ℃時間：2020-08-07 20:51:43

優(yōu)質解答

先每種拿出10枚,還有2毛,也就是說用三種硬幣湊兩毛錢
20個一分；18個一分,一個兩分；16個一分,2個2分；15個一分,一個5分；14個一分,3個2分；13個1分,1個2分,1個5分；12個1分,4個2分；11個1分,2個2分,1個5分；10個1分,5個2分；10個1分,2個5分；9個1分,1個5分,3個2分；8個1分,2個5分,1個2分；8個1分,6個2分；7個1分,1個5分,4個2分；6個1分,2個5分,2個2分；6個1分,7個2分；5個1分,1個5分,5個2分；5個1分,3個5分；4個1分,2個5分,3個2分；4個1分,8個2分；3個1分,1個5分,6個2分；3個1分,3個5分,1個2分；2個1分,2個5分,4個2分；2個1分,9個2分；1個1分,1個5分,7個2分；1個1分,3個5分,2個2分；4個5分；10個2分
一共28種