Please help me on math, thanks!

posted by Frank

If no digit may be used more than once, how many 2-digit numbers can be formed using only the digits 5, 6, 3, and 2?


  1. Ms. Sue


    Did I list all of the possibilities?

  2. Reiny

    There are 4 digits to fill 2 spaces
    number = (4)(3) = 12

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