Question 1166792
Viewers ABC NBC CBS Other Total
Men 30 20 40 55 145
Women 50 10 20 45 125
Total 80 30 60 100 270

Given a woman (there are 125) probability watch other than CBS (105) so answer is 105/125 or 0.84
Given a man (145) NBC or CBS (60) so probability is 60/145 or 0.41.