数学题!99我(英文要好)!另外一题4.(a)Heigh-ho,heigh-ho!TheSwvenDwarvesareofftowork.Eachdaytheyworkinfour"teams"-atleastoneofwhichinevitablycontainsjustonDwarf!Theirgoalistosplitupeachdayinanewway.

Question

数学题!99我(英文要好)!另外一题
4.(a) Heigh-ho, heigh- ho! The Swven Dwarves are off to work. Each day
they
work in four"teams"
- at least one of which inevitably contains just on Dwarf! Their goal
is to
split up each day in a new way. For how many days can they keep this
up?
(b)Suppose Snow White joins them, but they still work in four teams.
For how
long can they split up in a new way each day?
回答的明白点好吗??

Answer 1

题目大意七个小矮人每天工作分成四组,每组最少一人,每天的分法要不一样,他们这样可以干多少天第二问是加上白雪公主,就是八个人工作,也分四组,和上一题一样此题为排列组合题目第一问105+210+35=350天可分为2221 3211 ...