ITPEC IP October 2019 Question 52
ITPEC IP October 2019 — Question 52 of 100
A team of ten requires three times as many one-to-one communication paths as a team of six. For n people, every distinct pair forms one path, so the number is n(n - 1) / 2. Six people require 6 x 5 / 2 = 15 paths, while ten require 10 x 9 / 2 = 45; therefore, 45 / 15 = 3.
Answer (c)
Why not others:
- 1.5, 2.5, and 6 do not equal the ratio of 45 paths to 15 paths
- communication paths grow by pairs, not in direct proportion to the number of people
Key rule: The number of one-to-one communication paths among n members is n(n - 1) / 2.
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