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some combinatorics
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26-04-2002 1:12pm#1here is what i'm studying atm, if anyone wants to guide me through any of these {esp the last question} i't woudl make me happy , and feel not too bad about heading out tonight.
i]they are not homework or anything[/i
How many ways are there to distribute 20 different toys among 5 children , with
* no restrictions
* 2 kids get 7 book and 3 kids get 2
* each kid gets 4 toys
A man has n friends and inviets a different subset of 4 of these to his house every night of the week , how many friends must he have to make this possible.
how many bit strings of length 21 , with 17 0's and 4 1's and every 1 followed by a zero , can be made
if there are n points on the circumference of a circle and all the straight lines connecting them are joined. what is the largest number of points of intersection of these lines inside the circle that can be obtained .
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also its an idea to those people that want to study maths what questions could be like0
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