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10 September, 01:23

How many length 6 passwords with 1 number 1 upper and 1 lower?

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  1. 10 September, 01:38
    0
    For each password character, there are 26+26+10=62 possibilities. That brings the total number of possible passwords to 62⁶ if we wouldn't consider the additional constraints.

    - No passwords without numbers allowed, so we subtract 52⁶

    - No passwords without uppercase allowed, so we subtract 36⁶

    - No passwords without lowercase allowed, so we subtract 36⁶

    Now we have subtracted the passwords of all capitals twice, so we have to add those back in: add 26⁶

    Same for all lowercase and all numbers: add 26⁶ and 10⁶

    end result: 62⁶ - 52⁶-36⁶-36⁶ + 26⁶+26⁶+10⁶ = 33294892800
  2. 10 September, 04:35
    0
    What Do you mean 6 passwords?
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