- #1
gl0ck
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Homework Statement
Here is some basic combinatorics, I need someone to check it for me, please before the lecturer :)
Sorry for the stupid questions, hope I've made myself clear with the explanations of the answers given.
(1)(a) If 8 cooks are to be divided among 4 restaurants, how many divisions are possible?
(b) What if each restaurant must receive precisely 2 cooks?
(c) How many possible ways we can pair these 8 cooks up among themselves?
(d) How many possible ways we can distribute 8 identical bowls into the 4 restaurants?
Homework Equations
The Attempt at a Solution
a) is it 4^8?
b) for the first restaurant we have (8 2) and for the next 3 we have to decrease 2 cooks so we have (8 2) * (6 2) * (4 2) * (2 1)
c) 8! ?
d) V 4 8 = 1680?
2
a) S = {E,F}
b)E={head}
c)F={heads>tails}
d)E U F ={head,tail}
e)E n F
f)(E U F)c = {tails>heads} ? isn't it the De Morgan's where EcF = (E U F)c?
g)= {tails>heads}
h) impossible? like logic's (0 and 1) and 1 = 0?
Thank you !