[帮忙] 一题数学~~很急~~!!

楼主: angel0527 (angel0527)   2006-10-03 01:43:50
comsider the 2^19 composition of20.{a}how many have each summand
even?{b}how many have each summand a multiple of4?
关于composition,基本上指的是加法的组合..............
感激各位大大囉!!
谢~~
顺便讲一下~~
书名是~~~
discrete and combinatorial mathematic

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