l: Question 3 3.34 pts Mrs. Mortlock uses a calculator program to select students at random to answer questions during class. Each of the 28 students in her class is equally likely to be chosen every time she runs the program. Suppose Mrs. Mortlock runs the program for ve different questions. (a) In how many different ways can the program select which students will answer the ve questions? (b) How many of the selections in part (a) include 5 different students? l: Question 2 3.34 pts The pentatonic musical scale contains 5 notes in an octave: C, D, E, G, and A. Miles decides to look for new musical themes by playing random sequences of 4 notes from the pentatonic scale. (a) How many possible four-note sequences can be played? (b) How many possible four-note sequences contain no Gs? Question 1 3.34 pts Many banks require customers who use the automated teller machine (ATM) to enter a four-digit password before they begin a transaction. (a) How many possible four-digit passwords are there? (b) How many four-digit passwords contain no 3s