Q6.A company has 15 offices and wants to set up two-way communication between every pair of offices. However, the 3 smallest offices will not have direct communication with one another, though each of them can still connect directly with the remaining offices. How many communication channels are needed in total?
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Q6
3 Aug 2025
Q6.A company has 15 offices and wants to set up two-way communication between every pair of offices. However, the 3 smallest offices will not have direct communication with one another, though each of them can still connect directly with the remaining offices. How many communication channels are needed in total?
