Who gets picked? Mr. Paradise uses a calculator program to select students at random to answer questions during class. Each of the 28 students in his class is equally likely to be chosen every time he runs the program. Suppose Mr. Paradise runs the program twice. Th e fi rst student selected gets to answer Question 1, and the second student selected (who might be the same student) gets to answer Question 2. (a) Use the multiplication counting principle to fi nd the number of diff erent ways that the program can choose who answers these two questions. (b) Now fi nd the number of ways in which two diff erent students are chosen to answer the two questions. (c) Whats the probability that the program selects two diff erent students in the class for the fi rst two questions?