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OK. Like this:
No 'a's appear in the question you had so put a = 1 and all the a powers are just 1.
Put b = 6.
And that's it because the LHS is 7^n and the RHS is what you were asked to simplify.
You know this is a trick question, expanding and what not... wth -- like a couple hours on that complete nonsense!!!
so how does it get to
I must be missing a step:
The question needs the binomial formula:
Using that formula try putting a = 1, b = 6
How do you solve #3??? I cannot find that anywhere... I am sure it is simple, but I cant get it!
that is supposed to be +...+6^(n-1) -- looks like the math script is a bit broken
This is not homework -- it is a problem on a previous test.. I can't figure it out.
I am guessing Jhua4 is from UCI as well, Dillenc0urt?
which is confirmed by direct computation.
4) Is correct. Just a standard Mississippi problem.
5) Please state what you mean by the LaPlace's probability model.
2) 2^40 (50,10)
I worked through them all but am not sure if they're correct.
1) suppose you have 70 books (35 novels, 20 history books and 15 math books). Assume that all 70 books are different