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August 3, 2015

Homework Help: maths

Posted by DONNA on Sunday, October 18, 2009 at 10:21pm.

Twelve couples, who live in the Happy
Retirement Villa, decide to install intercom systems between each of their 12 suites. How many connecting lines are necessary to permit direct conversation between any suites?
(a) 2 couples
(b) 3 couples
(c) 4 couples
(d) 5 couples

Thank you

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