A jar contains 5 white, 8 red, 2 blue and 3 black balls. Find the probability that a ball drawn at random is red or blue.

 Ques. A jar contains 5 white, 8 red, 2 blue and 3 black balls. Find the probability that a ball drawn at random is red or blue.

A] 4/9 

B] 5/9 

C] 2/7 

D] 1/5

Ans- B

Solution- 

Total number of balls in the bag = 5 + 8 + 2 + 3 = 18

Number of red or blue balls in the bag = 8 + 2 = 10

Probability = 10/18 = 5/9