Question

There are 5 green, 6 black and 7 white balls in a bag. A ball is drawn at random from the bag. Find the probability that it is not white.

• A. 11/18
• B. 7/18
• C. 2/3
• D. 5/18

Answer 1

The correct option is A

11/18

The total number of possible outcomes = Total number of balls

= 5 + 6 + 7

= 18

Number of favourable outcomes = Number of black balls + Number of green balls

= 5 + 6

= 11

$\therefore$ Probability of not getting a white ball = $\frac{\text{number of favourable outcomes}}{\text{total number of outcomes}}$

= $\frac{11}{18}$