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Sagnik Dhar posted an Question
August 20, 2020 • 19:25 pm
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- IIT JAM
- Chemistry (CY)
There are 5 bags, three of which each contain 5 orange and 2 purple marbles. the remaining 2 bags each contain 1 orange and 4 purple marbles. a purple marble ha
There are 5 bags, three of which each contain 5 orange and 2 purple marbles. The remaining 2 bags each contain 1 orange and 4 purple marbles. A purple marble has been drawn. What is the probability that the purple marble came from the first group ot bags Containing 5 orange and 2 purple marbles? 35
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Amol ashok pawar![best-answer]()
There is an easy way to do conditional probability. Suppose the experiment was done 3500 times and the results followed expectations. You would get bag 1 orange = 500 bag 1 purple = 200 bag 2 orange = 500 bag 2 purple = 200 bag 3 orange = 500 bag 3 purple = 200 bag 4 orange = 140 bag 4 purple = 560 bag 5 orange = 140 bag 5 purple = 560 Since the drawn ball was purple consider only the 1720 purple balls 600 of those balls came from the first group so the answer is 600/1720 = 15/43