A factory lot contains 8 good and 2 defective bulbs
MATHEMATICS · Multi-part · A Level · Mathematics · Probability · Probability
Problem
A factory lot contains 8 good and 2 defective bulbs. An inspector picks three bulbs one by one without replacement.
(i) Find the probability that the first two bulbs selected are good.
(ii) Find the probability that the first two bulbs are good and the third bulb is defective.