SOLUTION: Every year, students decide which four classes to take each semester. They must take two core classes each semester consisting of Math, Science, English, or Social Studies. There a

Question 1163393: Every year, students decide which four classes to take each semester. They must take two core classes each semester consisting of Math, Science, English, or Social Studies. There are 6 electives to choose from for the remaining two classes.
Q: How many different class schedules are possible if each course is assigned to one of the four periods?
I did C(4,2) multiplied by C(6,2) and got 90 as the result but the answer was incorrect.
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
C(4,2) is the first one. There are 6 electives to choose from for the third, and after that, there are 5 electives to choose from for the fourth.
6*6*5=180.
RELATED QUESTIONS
Every year, students have to decide which four classes to take each semester. They must... (answered by Boreal)

A friend has seven different classes that they have to take next semester. In how many... (answered by solver91311)

A student needs 6 more classes to complete her degree. If they are all electives, how... (answered by ikleyn)

a student must take 2 math classes, 2 english classes, 2 science classes, 1 history... (answered by Dinosaur)

A student is to select 3 classes for next semester. If this student decides to randomly... (answered by richard1234)

ou are going to decide whether you will attend university classes for 8 weeks the... (answered by ikleyn)

Many colleges require students to take a placement exam to determine which math courses... (answered by greenestamps)

during the first semester the ratio of the number of students in art class to the number... (answered by ankor@dixie-net.com)

A school has 18 classes with 35 students in each class. In order to reduce class size to... (answered by stanbon)