solve the question

7. In a classroom, there are 10 male students, 12 female students, and 7 teachers. In how many ways can 3 male students, 7 female students, and 5 teachers be chosen? 933.942 1,995,840 3,994,920 77,558,760 8. How many diagonals does a pentagon have? 21 For items 9-12. A group of 6 women and 9 men must select a six-person committee. How many committees are possible if each committee must consist of the following: 9. equal number of men and women? 104 540 1,680 1,890 10. at most 4 women? 2,220 4,110 4.866 4,950 11. no women? 1,890 5,005 60,480 12. minimum of 4 men? 1,890 2,646 2,703 2,730