communication channel: calculating number of stakeholders

Submitted by nandita on Mon, 03/23/2015 - 09:42

 

For communication channel can any one help me out calculating number of stakeholders , if number of communication channels were provide in the question .

Suppose question says there are total 10 communication channels find the total number of stakeholders

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PMP / CAPM exam Question bank
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jyotig

Mon, 03/23/2015 - 11:49

The formula for total no. of communication channels T=n*(n-1)/2

Put the value of T=10 and solve the quadratic equation
It will be n^2 - n - 20 = 0
n^2 - 5n +4n -20 =0 (factorize 20 in such a way that you get a difference of 1)
n(n-5)+ 4(n-5) =0
(n-5)(n+4)=0
either n=5 or n=-4, since the value cannot be in negative so the value of n=5