Question

A bag contains 3 white, 5 black and 2 red balls. If a ball is drawn at random, find the probability that the ball drawn is, (i) a black ball (ii)a red ball (iii) a white ball (iv) not a black ball. ​

Answer 1

Answer:

Step-by-step explanation:

total no. of outcomes = 10

(i)no. of favourable outcomes = 5

P(of getting a black ball) = 5/10 = 1/2

(ii)no. of favourable outcomes = 2

P(of getting a red ball) = 2/10 = 1/5

(iii) no. of favourable outcomes = 3

P(of getting a white ball) =3/10

(iv)no. of favourable outcomes = 3+2 =5

P(of not getting a black ball) = 5/10=1/2

                       OR

(iv) P(of not getting a black ball) = 1 - P(of getting a black ball)

                                                       = 1- 1/2

                                                        =1/2

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Answer 2

Answer:

I) 0.5

ii) 0.3

iii) 0.5.