TOPIC: Question on communication channels

hi,
Need help on answering below question on communication channels !
thanks

In a team of four people, an additional person is added. This person will only communicate with two other team members. How many new communication channels have been added?
a)2
b)3
c)4
d)1

The formula for communication channels is explained in this article: www.project-management-prepcast.com/free...nications-management

Thank you very much for your prompt reply ...

I'm studying for PMP and very familiar with communication channels and confused on answering this question!

need your help to answer the question in details please

Thanks again

I believe the answer is 2.
The additional person will communicate with 2 people. Use the formula to establish that between 3 people there are 3 communication channels. However, the original 2 people would have been always able to communicate with each other previously, so that channel is not new. There are only 2 new channels added.
Does that help?

Thanks again for your response...
I believe 4 is the correct answer based on my attached assumption !
Your thoughts please
Regards,

We will have to agree to disagree! You have added 3 more people to the team. The question only requires adding one. I believe the question means that the two team members referenced are already in the project team. Your interpretation is that they are outside the project team. In real life you'd know which one was true as you would know who the people are! In the question as you have presented it, 'other team member' means 'another person in the same team' not 'person in another team'.