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My calculator wasn’t working for this I’m not sure how to solve it but help would be coolio

My calculator wasn’t working for this I’m not sure how to solve it but help would-example-1

1 Answer

2 votes

We know that:


_nP_k = (n!)/((n-k)!)

so in this case
n = 5,
k=3 and:


_5P_3=(5!)/((5-3)!)=(5!)/(2!)=(5\cdot4\cdot3\cdot2\cdot1)/(2\cdot1)=(120)/(2)=\boxed{60}

User Kostiak
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