Question1 - From the official writeup of the Seminar, i gather it is a pass/fail exam and not a grading one. Those who pass get a coach certificate, but what about the persons who fail?
They get a certificate of attendance.
Question 2 - What is the pattern of the exam? How many questions? Are the question pertaining to the information discussed and disseminated during the 3 days or are they from a wider pool?
There are about 10 essay questions, drawn from information covered in the seminar. It wouldn't be an accurate assessment of your command of the seminar information if I asked you questions about material not covered by the seminar.
Question 3 - Is the coach certification system intended towards developing a Starting Strength franchise system in the future?
You mean like a Starting Strength Gym? No.