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    Factorials, Combinations and Permutations

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    Solve and please show all work:
    A) 7!-4!
    B) 20!/18!
    C)7P3
    D) 4P4
    E) 8C8
    F) 9C5

    © BrainMass Inc. brainmass.com March 4, 2021, 6:17 pm ad1c9bdddf
    https://brainmass.com/math/combinatorics/factorials-combinations-permutations-38808

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