AP EAPCET 19th May 2023 Shift 1 Solved Paper

A shopkeeper buys a particular type of electric bulbs from three manufacturers M1, M2, and M3. He buys 25% of his requirement from M1,45% from M2, and 30% from M3. Based on past experience he found that 2% of type M3 bulbs are defective, where as only 1% of type M1 and type M2 are detective. If a bulb chosen by him at random is defective, then the probability that it was of type M3 is