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Factorials
CONCEPTS
Equation
• n ! = (n - 0) (n - 1) (n - 2)…
EXAMPLES
• 4 ! = (4 - 0) (4 - 1) (4 - 2) (4 - 3) = 4 * 3 * 2 * 1 = 24
PRACTICE PROBLEMS
Question 1 What is the value of (3 !) * 4?
-- Answer -- 24
3 ! = (3 - 0) ( 3 - 1) ( 3 - 2) = 3 * 2 * 1 = 6
(3 !) * 4 = 6 * 4 = 24
ACT PRACTICE PROBLEMS