MATH Prob.

How many three-symbol codes can be formed from the
letters I, S, P, and Y without repetition?

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asked by Twg
  1. What is 4*3*2?

  2. Can you please show me how you got that answer?

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    posted by Twg
  3. How many three-symbol codes (letter-number-number)
    can be made from the letters S, P, Y, and two digits
    from the set {0, 1, 2,....., 9} without repetition?

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    posted by Twg
  4. As far as your first question, I think bobpursley is referring to 4! called "four factorial."

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    posted by PsyDAG

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