A boy goes to shop and buys a big book.
He take the book to a medical student and ask's him how much time will he
take to finish the book.
A Medical Student says 6 month's minimum.
Then he goes to a law student and ask's the same question, he says minimum 3
months
Then he does a wise thing and goes to an engineer and asks the same question
How much time will you take to finish the book???
The engineer says
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EXAM KAB HAI ...