The following numbers of students at a local college received special assistance from the counseling center last semester for these specified problems: Relationship breakup: 40 Depression: 20 Drug/alcohol use: 30 Test anxiety: 10 TOTAL = 100 If you were to select a student at random from last semester's records, what is the probability that the student selected would fall into each of the following problem categories: (a) drug/alcohol use (b) test anxiety: (c) a category other than relationship breakup