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  1. W

    Probability question

    Hmm, I thought the way you solve it would be total-repetitions and somehow I got 6P3-4C1*3P3*2P2.
  2. W

    Probability question

    A box contains six cards, two of which are identical. From this box, three cards are drawn in order without replacement and put on a table in a row. How many different arrangements can be made? The answer is 72. I've answered 6P3-4C1*3P3*2P2 to eliminate the repetitions, but 48 repetitions...
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