how many four-character alpha-numeric codes are possible if repeated characters are not allowed?

Question

how many four-character alpha-numeric codes are possible if repeated characters are not allowed?

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Nem 5 years 2021-07-30T13:59:44+00:00 1 Answers 18 views 0

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  1. Acacia
    0
    2021-07-30T14:01:27+00:00
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    Answer:

    1,413,720

    Step-by-step explanation:

    Total number of characters = letters + numbers

    = 26 + 10

    = 36.

    So total number of possible codes

    = 36P4

    =  36!/ (36-4)!

    = 36*35*34*33

    = 1413720

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