Q41 of 128 Page 13

A bag contains 3 red balls and 5 black balls is drawn at random from the bag. What is the probability that the ball drawn is (i) red? (ii) not red?

Total number of possible outcomes, n(S) = 8


(i) Number of favorable outcomes, n(E) = 3



(ii) Probability of not drawing a red ball = 1 – P(E)



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(i) A lot of 20 bulbs contain 4 defective ones. One bulb is drawn at random from the lot. What is the probability that this bulb is defective?

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