10% of the bulbs produced in a factory are of red colour and 2% are red and defective. If one bulb is picked up at random, determine the probability of its being defective if it is red in colour.
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1/5
Step-by-step explanation:
Let A and B be the events that the bulb is red and defective, respectively. P (A) = 10/100 = 1/10. P (A ∩ B) = 2/100 = 1/50. Thus the probability of the picked up bulb of its being defective, if it is red, is 1/5
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