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Topic: Combinations Example that I explain in the video: In a classroom there are 12 male and 10 female students. How many committees can be formed if each committee must consist of 4 male and 2 female students? Exercise for you: In a city council there are 10 councilors and 5 councilors. How many committees can be formed if each committee must consist of 5 councilors and 3 councilors?