Bob is a new TA for one course. He has a probability of 14 to answer a question incorrectly independent of other questions. In a class, Bob can be asked a maximum of 3 questions. The probability that Bob will be asked 1, 2, and 3 questions will be each 13, respectively; Bob is guaranteed to be asked at least one question in that class. What is the probability that Bob was asked 2 questions, given that he has answered 1 question incorrectly