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teresa has to create a password that contains 1 digit and 2 letters. find the number of possible passwords?

how do you do this?

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Sara!

  1. i did 26 *26*9 because there are 26 letters in an alphabet, and just 1 letter can go into 26 (counting its self) and 9 because it has to be 1 number.

    so 26*26*9=6084

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    becca

  2. I will assume that zero can be used as a digit, and that letters can repeat.

    There are 3 ways for the digit and letters to show up
    DLL
    LDL
    LLD

    let's find the number of ways DLL can be done
    = 10x26x26

    the same with the other two, so the number of ways is
    3(10)(26)(26) = 20280

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    Reiny

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