Comments on: A-Math P & C Qn! http://www.singaporeolevelmaths.com/2007/09/22/a-math-p-c-qn/ Simple, Practical Tips for Better Maths Results! Tue, 07 Sep 2010 02:10:00 +0800 http://wordpress.org/?v=2.8.5 hourly 1 By: alwaysLovely http://www.singaporeolevelmaths.com/2007/09/22/a-math-p-c-qn/comment-page-1/#comment-54 alwaysLovely Fri, 21 Sep 2007 12:40:00 +0000 http://singaporeolevelmaths.com/2007/09/22/a-math-p-c-qn/#comment-54 well done!<br/>Good job! well done!
Good job!

]]> By: lijun(: http://www.singaporeolevelmaths.com/2007/09/22/a-math-p-c-qn/comment-page-1/#comment-53 lijun(: Fri, 21 Sep 2007 12:07:00 +0000 http://singaporeolevelmaths.com/2007/09/22/a-math-p-c-qn/#comment-53 hey..<br/><br/>my amaths really isn't strong, so i hope you'll help me and correct my mistakes. thanks.<br/><br/>anyway. here are my answers:<br/><br/>(i)no. of ways in which 6 applicants can be selceted for the interview = 15C6 = 5005<br/><br/>(ii)no. of ways in which the order of the six interviews can be arranged = 6! = 720<br/><br/>number of ways in which the order of the 6 interviews can be arranged, when applicants having the same background are interviewed in succesion = 3!X2!X3! = 72<br/><br/><br/>i'm quite doubtful of the last answer. haha. but i decided to try anyway. (: hey..

my amaths really isn’t strong, so i hope you’ll help me and correct my mistakes. thanks.

anyway. here are my answers:

(i)no. of ways in which 6 applicants can be selceted for the interview = 15C6 = 5005

(ii)no. of ways in which the order of the six interviews can be arranged = 6! = 720

number of ways in which the order of the 6 interviews can be arranged, when applicants having the same background are interviewed in succesion = 3!X2!X3! = 72

i’m quite doubtful of the last answer. haha. but i decided to try anyway. (:

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