The number of ways of she can do it is 504 ways
The formula for permutation is given as:
Permutation = [tex]\frac{n!}{n - r!}[/tex]
Where:
Substitute into the formula
Permutation = [tex]\frac{9!}{9 - 3!}[/tex]
P( 9, 3) = [tex]\frac{9!}{6!}[/tex]
P( 9, 3) = [tex]\frac{362880}{720}[/tex]
P( 9, 3) = 504 ways
Thus, the number of ways of she can do it is 504 ways
Learn more about permutation here:
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