In the library there are 8 books by stephen covey and one book by vinay singh in shelf A.At the same time there are 5 books by stephen covey in shelf B.One book is moved from shelf A to shelf B.A student picks up a book from shelf B.Find the probability that the book is by Vinay Singh.
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1. If Vinay singh book is still there in shelf A means stephan book is moved so the probability of moving stephan book is 8/9
2. Vinay singh book is moved to shelf b and book is picked 1/9 * 5/6 = 5/54 ( probability of moving vinay book and picking stephan book in shelf B)