A bag contains 7 white, 9 black, and 10 green balls. What is the probability that a ball drawn at random from the bag is white W or green G?
A)Pr(W∪
G) =
B)Pr(W∪
G) =
C)Pr(W∪
G) =
D)Pr(W∪
G) =
E)Pr(W∪
G) =

Question

A bag contains 7 white, 9 black, and 10 green balls. What is the probability that a ball drawn at random from the bag is white W or green G? ​
A)Pr(W∪
G) = 
B)Pr(W∪
G) = 
C)Pr(W∪
G) = 
D)Pr(W∪
G) = 
E)Pr(W∪
G) =

Quizplus · Accepted Answer

To find the probability of drawing a white or green ball, we need to add the probabilities of drawing a white ball and a green ball separately and then add them together.
Probability of drawing a white ball = number of white balls / total number of balls = 7 / 26
Probability of drawing a green ball = number of green balls / total number of balls = 10 / 26
So, the probability of drawing a white or green ball = 7/26 + 10/26 = 17/26 = 0.6538
Therefore, the correct option is B) Pr(W∪G) = 11eb0d3b_9824_9d81_9790_e744b0b3ebd3_TB1243_11.

A Bag Contains 7 White, 9 Black, and 10 Green