Chapter 7.E, Problem 19E

Review off Factorials. use the skills covered in the Brief

Review on p. 458 to evaluate the following quantities without using

the factorial key on your calculator (you may use the multiplication

key). Show your work.

11. 6!

12. 12!

13. $\frac{5!}{3!}$

14. $\frac{10!}{8!}$

15. $\frac{12!}{4!3!}$

16. $\frac{9!}{4!2!}$

17. $\frac{11!}{3!\left(11-3\right)!}$

18. $\frac{30!}{29!}$

19. $\frac{8!}{3!\left(8-3\right)!}$

20. $\frac{30!}{28!}$

21. $\frac{6!8!}{4!5!}$

22. $\frac{15!}{2!13!}$