(Answered) Question a financial company places adverts in three

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Question : A financial company places adverts in three publications with probabilities of 0.2, 0.3 and 0.5 res. The probability that the company gets an enquiry from an advert in the first publication is .001. The probabilities from other two publications are .002 and .004 res. Given that the company has just received an enquiry, calculate the probability that it came from an advert in the first publication.

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