Question

habit of company bag contains 24 balls of which X are red 2x are white and blue a ball is selected at random. what is the probability of that it is

a) not red
b) white
​

Answer 1

Answer:

(a) 5/6

(b) 1/3

Step-by-step explanation:

Number of red balls = x

Number of white balls = 2x

Number of blue balls = 3x

Total number of balls in the bag = 24

=> x + 2x + 3x = 24

=> 6x = 24

=> x = 4

Thus,

Number of red balls = 4

Number of white balls = 8

Number of blue balls = 12

(i) Not red :

Total balls n(S) = 24

Let A be the event of selecting a ball which is not red.

n(A) = 8 + 12 = 20

Required probability = n(A)/n(S)

                                  = 20/24

                                  = 5/6

(ii) White :

Let B be the event of selecting a white ball.

n(B) = 8

Required probability = n(B)/n(S)

                                  = 8/24

                                  = 1/3

Hope it helps!