Answer: There is 362880 ways she can arrange them.
Step-by-step explanation:
Since we have given that
Number of sweaters she has = 4
Number of coats she has = 2
Number of jackets she has = 5
According to question, we have asked to put sweater first, and a jacket last,
So, remaining items will be
[tex]11-(1+1)\\\\=11-2\\\\=9[/tex]
So, we will use "Fundamental Theorem of Counting " as arrangement is needed:
So, it becomes,
[tex]1\times 9!\times 1\\\\=9\times 8\times 7\times 6\times 5\times 4\times 3\times 2\times 1\\\\ =362880\ ways[/tex]
Hence, there is 362880 ways she can arrange them.