You want to create an ID code for the students in your school based on three characters. The first and second characters must be a letter of the alphabet, and the third must be a digit between 1 and 9 inclusive. To find out how many different
codes there are, would a list or tree diagram be practical in this case? Why or why not?
a. Yes, we have all the information we need
b. Yes, this is one way to find the answer
C. No, since there are too many choices
d. No, we don't have all the information we need