Homework Help: maths

Posted by Ken on Monday, October 19, 2009 at 11:11pm.

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

maths - Anonymous, Tuesday, November 10, 2009 at 7:21pm
6
maths - Anonymous, Tuesday, March 20, 2012 at 5:56am
I have no idea
maths - drwls, Friday, March 15, 2013 at 7:25am
Your choices do not match the question. The answer should be in units of connecting lines, not in the number of couples.
I suspect someone copied the problem incorrectly.

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