Question

A class has 12 males and 15 females. There's 7 males and 9 females in class who plays tennis. If a student is chosen from the class at random, find the probability of that student is;
A) a female who doesn't play tennis

B) a male tennis player.

Answer 1

First, let's make a two-way table using a matrix:

$\left[\begin{array}{cccc}&Tennis&No&Total\\Male&7&5&12\\Female&9&6&15\\Total&16&11&27\end{array}\right]$

A. $\frac{6}{27}\\\frac{2}{9}$

B. $\frac{7}{27}$