Question

(4) A bag contains 3 red, 3 white, 3 green and 3 black balls. One ball is picked up from the
bag at random. What is the probability that the ball drawn is:
(a) white.
(b) not white.​

Answer 1

Answer: (a) P(E)=3/12=1/4

(b) P(E)=9/12=3/4

Step-by-step explanation:P(E)=no. of favourable outcomes divided by total outcomes

Answer 2

Answer:

(a) 1/4

(b) 3/4

Step-by-step explanation:

probabilty of picking a white ball = no. of white balls/total no. of balls

=3/(3+3+3+3)

=3/12

=1/4

probability of not picking a white ball = 1 - probability of picking a white ball

=1-(1÷4)

=(4-1)/4

=3/4