Perms & Combs: Factorial !, Linear Permutation 505

This lesson is part of the series: Permutations & Combinations

This 66 minute perms & combs lesson introduces and works with factorial notation by simplifying expressions and solving equations with factorials. This lesson also includes the definition and formula for a permutation. This lesson will show you how to:
- answer questions using factorial notation
- use the permutation formula for questions with no restrictions

Sample questions:
1. Solve for n. (n+1)!/(n-1)! = 90
2. Some motorcycle license plates consist of 2 different letters, followed by 3 different digits. How many license plates are possible?

This lesson contains explanations of the concepts and 22 example questions with step by step solutions plus 10 interactive review questions with solutions.

Lessons that will help you with the fundamentals of this lesson include:
- 135 Solving Linear Equations Part I (http://www.mindbites.com/lesson/5068)
- 230 Solving Quadratic Equations by Factoring (http://www.mindbites.com/lesson/5087)
- 500 the Fundamental Counting Principle (http://www.mindbites.com/lesson/5104)

All lessons have been prepared by a certified teacher, B.A., B. Ed. (Math Major) with 30+ years experience teaching Math to High School Students and Continuing Education learners. She has a reputation for teaching the math class that “you want to be in.” For more information please visit Math Made Simple: http://www.mathmadesimple.com/

Through her teaching and tutoring experiences, the growth of technology and the internet she recognized a need to make comprehensive math lessons available via the Internet to help:

- High school students who have missed a class or maybe just need a little extra help or are in sports or other extra curricula activities
- Teachers looking for a way...

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