Perry has 81 red balls, which she wants to arrange in rows. if the number of balls in each row must be equal to the number of rows, how many balls must there be in a row?

3
7
9
11

50 people men and women were asked if they watched at least one sport on tv. 20 of the people surveyed are women, but only 9 of them watch at least one sport on tv. 16 of the men watch at least one sport on tv. make a a two-way table and a relative frequency table to represent the data.