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Math Help - statistics- permutations and combinations

  1. #1
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    statistics- permutations and combinations

    a coin is tossed 10 times

    how many different sequences of heads and tails are possible?

    what do i do here please

    thanks
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  2. #2
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    2^{10}  = 1024
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  3. #3
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    thanks very much. much more simple than I thought.
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