Probability

[dahiya]

If a committee of 3 people is to be selected from among 5 married couples so that the committee does not include 2 people who are married to each other, how many such committees are possible

20
40
50
80
120

[arjmen]

Previously discussed here
http://www.urch.com/forums/showthrea...arried+couples (permutations and combinations)

[sumon.saha@gmail.com]

I think it should be D (80).

= 10C3 - 5C1*8C1
=80