Correct Answer - B
From a group of 9 people, 5 people can be chosen in .9C5
ways.
∴
Total number of ways of forming the committee =.9C5
The number of ways in which a certain married couple is either in the committee or it is not included in the committee, is
.7C3×.2C2+.7C5
Hence, required probability =
.7C3+.7C5
.9C5
=
4
9