document.write( "Question 1069985: Problem: A fair coin is flipped eight times. What is the probability of the coin landing heads up exactly four times?\r \n" );
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document.write( "My Attempt: I calculated how many different scenarios there are: (1/2)^8=1/256 \n" );
document.write( "I calculated how many ways we can order the 4: 1680\r \n" );
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document.write( "My answer would be 1680/256...but the probability can't be more than 1.\r \n" );
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document.write( "The correct answer was 247/256....where might have I went wrong? \n" );
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