Answer:
5850
Step-by-step explanation:
The objective is to find the number of ways that two representatives can be picked such that one is mathematics major and the other is computer science major.
Recall the following product rule:
If one task can be done in ways and another task can be done in ways, then the number of ways that the two tasks can be done in sequence is, .
Use the above product rule to find the required number of ways in this case since the first task is to pick a mathematics major and then the second task is to pick a computer science major.
Thus, the number of ways that two representatives can be picked such that one is mathematics major and the other is computer science major is,
5850