Factorial Notation

                     Lesson 1

Problem:   Determine the value the of factorial 12! – (9 – 2 )!

Solution    To determaine the factorial

Step 1:

Solution    12! – (9 – 2 )! = 5!

Step 2: 

Solution    5! = 5 x 4 x 3 x 2 x 1 = 120

Step 3:

                                                            Solution Answer: 120

                                                            Step 4:

Complete      

                                                            Try two practice problems:

Solve the following:

A.

3! – (8 – 7)!

B.

(7 + 1)! ÷ 3!

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