A large class in probability theoryis taking a multiple choice test. For a particular question on the test,the fraction of examineeswho know the answer is p;1-p is the fraction that will guess.The probability of answering a question correctly is unity for an examinee who knows the answer and 1/m for a guessee;m is the number of multiple choice alternatives.Compute the probability that an examinee knew the answer to a question given that he or she has correctly answered it.