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June 7th, 2012, 01:37 PM  #1 
Newbie Joined: May 2012 Posts: 9 Thanks: 0  permutation and combination
ratio male to female is 0.53 . family of 7 children iwhat is the probability that all(7) children are boy iiare girl iii5 girls , 2 boys thank you 
June 7th, 2012, 03:08 PM  #2  
Math Team Joined: Dec 2006 From: Lexington, MA Posts: 3,267 Thanks: 408  Re: permutation and combination Hello, talo0000! Quote:
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June 7th, 2012, 05:39 PM  #3 
Math Team Joined: Apr 2012 Posts: 1,579 Thanks: 22  Re: permutation and combination
Talo0000, did you mean that there are 53 males for every 100 females or that 53 out of 100 children are male?

June 8th, 2012, 06:47 AM  #4 
Newbie Joined: May 2012 Posts: 9 Thanks: 0  Re: permutation and combination
thank you for your quick response but the relation is for every 100 case 53 male and 47 female , usually the relation is onetoone , but for this special case is .53 to .47 
June 8th, 2012, 02:32 PM  #5  
Math Team Joined: Apr 2012 Posts: 1,579 Thanks: 22  Re: permutation and combination Quote:
 

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