a drawer is filled with 2 black shirts, 7 white shirts, and 11 gray shirts. one shirt is chosen at random…
a drawer is filled with 2 black shirts, 7 white shirts, and 11 gray shirts. one shirt is chosen at random from the drawer. find the probability that it is not a black shirt. write your answer as a fraction in simplest form.
Answer
Explanation:
Step1: Calculate total number of shirts
$2 + 7+11=20$
Step2: Calculate number of non - black shirts
$7 + 11 = 18$
Step3: Calculate probability of non - black shirt
The probability $P=\frac{18}{20}=\frac{9}{10}$
Answer:
$\frac{9}{10}$