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some combinatorics

Pablo · 2002-04-26 12:12:54

here 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…

26-04-2002 01:12PM

#1

Pablo

Registered Users, Registered Users 2 Posts: 476 ✭✭

Join Date: April 2001

Posts: 427

here 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 .

_____________
also its an idea to those people that want to study maths what questions could be like

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