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A picnic is arranged to be held on a par...

A picnic is arranged to be held on a particular day. The weather forecast says that there is `80%` chance of rain on that day. If it rains, the probability of a good picnic is 0.3 and if it does not, the probability is 0.9. What is the probability that the picnic will be good ?

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The correct Answer is:
0.42
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