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discrete math

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if you have 5 signal flags and can send messages by hoisting 1 or more flags on a flagpole, how many messages can you send? please help!!

  • discrete math -

    I am wondering if the signal flags are different? If they are, then
    5! + 5*4*3*2 + 5*4*3 + 5*4 + 5

    check my thinking

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