Rocky is starting his online quizzes and he has been provided with some passing criteria. The rule of passing the online quiz is to obtain at least a certain mark. Rocky’s friend Gillan is good at computing and Rocky always takes his help in need. Rocky asks gillian about this passing criteria and asks Gillian to help find out his probability of passing the quiz if he guesses the answer of each question randomly from the available options without any thinking. Gillian thought sometime and told Rocky he will provide Rocky a program so that Rocky can estimate in advance his probability of passing the quiz if the number of quiz questions are known early.
This is a companion discussion topic for the original entry at https://toph.co/p/chance-of-passing-the-quiz