.
From nominated 1 women and 3 men, the pair of persons to serve on a committee can be chosen by
=
= 2*3 = 6 different ways.
Here 4 = 1 + 3 is the total number of nominated persons.
We consider here non-ordered pairs, since the difference in their positions/duties is not specified.
Of this total number of pairs, the pairs containing one woman can be selected by 3 different ways.
So, the probability under the question is
=
. ANSWER