How many permutations of three items can be selected from a group of six?

How many permutations of three items can be selected from a group of six? Use the letters A,

B, C, D, E, and F to identify the items, and list each of the permutations of items B, D, and F.

1 Answer

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  • 4 weeks ago

    You say permutations, which means that BDF is a different arrangement to BFD.

    so, 6P3 => 6!/(6 - 3)!

    i.e. 6!/3! = 6 x 5 x 4 => 120 permuatations

    In general if r items are selected from n in total we have:

    nPr => n!/(n - r)!

    :)>

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