dan815
  • dan815
Ten identical cookies are to be distributed among five different kids (A, B, C, D, and E). All 10 cookies are distributed. How many different ways can the five kids be given cookies?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
reemii
  • reemii
but i want a cookie.
Luigi0210
  • Luigi0210
I was never here
dan815
  • dan815
look how we can seperate cookies with places like separating by sticks |dw:1370586947943:dw|

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Luigi0210
  • Luigi0210
I'll take reemii's cookie
dan815
  • dan815
it shud let me post more questions than 1 at a time -.-
anonymous
  • anonymous
I used a simplified version of some of the methods posted above. I thought about dividing up the 10 cookies as “making cuts.” For instance, you have 10 cookies, so there are 9 possible cuts that can be made in the spaces between those 10 cookies. If you make 0 cuts, then 1 person will be given all the cookies. If you make 1 cut, then 2 people will receive cookies. If you make 2 cuts, then 3 people will receive cookies…..If you make 4 cuts, then all 5 students will receive cookies. Or more generally, if you make n cuts, then n+1 people will receive cookies. So the problem is just summing up all the ways that the cookies can be distributed when 0,1,2,3, and 4 cuts are made. This is a simple summation. For 0 cuts, we want to know how many ways we can choose 0 cuts from 9 possible cuts and then how many ways we can distribute the resulting section of cookies to the 5 people. The product is the number of ways that all 10 cookies can be distributed to one of the people. So we calculate 9 CHOOSE 0 * 5 CHOOSE 1 and this will give us the total number of ways that all 10 cookies can be given to one person. For 1 cut (remember that with 1 cut, 2 people will receive cookies), we calculate 9 CHOOSE 1 * 5 CHOOSE 2. For 2 cuts (3 people receive cookies), we calculate 9 CHOOSE 2 * 5 CHOOSE 3. You’ve probably already noticed a pattern. In order to distribute cookies to n people we need to make (n – 1) cuts. So to figure out the number of ways that cookies can be distributed to n people, we just calculate 9 CHOOSE (n – 1) * 5 CHOOSE n. And now we are ready for our summation: 5 Σn = 1 ( 9 CHOOSE (n – 1) * 5 CHOOSE n ) Sorry about the weird looking notation.

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