A student is to select three courses for next semester. If this student decides to randomly select one course from each of seven economic courses, nine mathematics courses, and four computer courses, how many different outcomes are possible?

There are 252 possible outcomes.

Step-by-step explanation:

For each economic course, the student can select nine mathematic courses.

For each mathematic couse, the student can select four computer courses.

There are 7 economic courses.

So in all, there are 9*4*7 = 252 possible outcomes, that is, the number of different ways which the student can select his courses.