Question 1044378: h) In a Mathematics course, the students are required to complete four projects. If there
are ten different projects to choose from, how many ways can a student choose the
four projects
i) if there are no restrictions? ii) if two of the projects are compulsory for all students?
Answer by jorel555(1290)   (Show Source):
You can put this solution on YOUR website! i) 10 different projects chosen 4 at a time is 10 choose 4, or 10!/4!6!, or 210 possible selections
ii)If 2 projects are compulsory, the you have 8 choose 2, or 8!/2!6!, which is or 28 possible combinations. ☺☺☺☺
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