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Question of the Day #367

367. On your project, you lead 7 members at beginning, and next week a new member will be joining you. So, after next week, how many communication channels will your project have?

1. 36

2. Unable to say

3. 28

4. 9



　

Answer and Explanation to Yesterday's Question

Answer :
1. 17
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Question Explanation :

"* The formula for calculating communication channels is = n * (n - 1) / 2

* The communication channels between you and the other 7 project team members ( 8 in total) should be: 8 * (8-1) / 2 = 28

* The communication channels between 10 members are: 10 * (10-1) / 2 = 45

* The question asks ""how many communication channels have been added"", and it should be: 45–28 = 17"

Source of Answer : PMBOK Guide,3rd, pages : 201