Thursday, May 8, 2014

Communication Channels Question - PMP (Project Management)


Communication Channels Question - PMP
(Easy and Tough)


1. John is project manager project is interacting with six stakeholders. Three new stakeholders join 
the project. How many new channels have been added?

 a. 15 channels
 b. 21 channels
 c. 24 channels
 d. 36 channels
Answer: B

The number of communication channels = n(n-1)/2  where n= number of stakeholders
In this question the project manager is interacting with six other stakeholders. Therefore there are 
seven stakeholders.
The number of communication channels = 7(6)/2= 42/2= 21 channels.
Three new stakeholders join. Therefore there are now ten stakeholders.
The number of communication channels = 10(9)/2= 90/2= 45 channels.
So for 21 channels for seven people and now have 45 channels for ten people.
Therefore (45-21) =24 new channels have been added.
Hope this clear your concept.

 


Now will discuss on tough question


2. John is project manager project is interacting with six stakeholders. and now there are new 45 
channels added for new stakeholders, What is total no of stakeholders in team now.

 a. 15 Stakeholders
 b. 21 Stakeholders
 c. 17 Stakeholders
 d. 36 Stakeholders
Ans: C

Method 1.
For this sort question how to find Stakeholders count from Channels
find multiplication number to 90 like
15*6 =90
18*5=90
10*9=90
But from above list find that both the multiplication number should next to each other
So 10*9 is right option , then for 45 Channels there are 10 is Stakeholder
Now existing 7 stakeholder including Manager + 10 new stakeholders = 17 Stakeholders

Method 2.
Check the each answer and match with channels(45) and find the solution
Eg. Total stakeholder are 7
eg. For 15 stakeholders = 15-7= 8 , 8*7/2= 28
eg. For 21 stakeholders = 21-7= 14, 14*13/2= 91
eg. For 17 stakeholders = 17-7= 10, 10*9/2= 45
eg. For 36 stakeholders = 36-7= 29, 36*35/2=630
So for 17 stakeholders Channels are 45 , Then your answer is C, Total 17 stakeholders

I have clear the concept both the ways.

Regards
Kshitij Yelkar-PMP
www.yelkar.com
Mumbai-India

Keywords: communication, pmp, project management, communication channels
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