A bag contains 3 red balls, 5 black balls and 4 white balls. Three balls are drawn at random. What is the probability that the ball drawn is:

(i) White

(ii) Red

(iii) Black

(iv) Not red

Answer:- We know that, Probability P(E) = (Total no. of probable results) (No. of favorable outcomes) =12C19C1=129=43.