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A motorcycle manufacturing company has t...

A motorcycle manufacturing company has two plants A and B. Plant A produces `70%` of motorcycle and plant B produces `30%` . At plant A, `80` of motorcycles are rated as of standard quality and at plant B, `90%` of the motorcycles are rated as of standard quality . A motorcycle is chosen at random and is found to be of standard quality . What is the chance that it has come from plant A ?

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The correct Answer is:
`(56)/(83)`
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