Please help me on math, thanks!

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?


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asked by Frank
  1. 56

    Did I list all of the possibilities?

    1. 0
    2. 0
    posted by Ms. Sue
  2. There are 4 digits to fill 2 spaces
    number = (4)(3) = 12

    1. 0
    2. 0
    posted by Reiny

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