document.write( "Question 432908: The probability of finding exactly 4 0's in a line 40 digits long is about?\r
\n" ); document.write( "\n" ); document.write( "The mean number of 0's in a line 40 digits long is?
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Algebra.Com's Answer #300126 by robertb(5830)\"\" \"About 
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p = 0.10 and q = 0.90 in a binomial experiment.\r
\n" ); document.write( "\n" ); document.write( "\"40C4%2A%280.10%29%5E4%2A%280.90%29%5E36+=+0.205887\", to 6 decimal places.\r
\n" ); document.write( "\n" ); document.write( "\"mu+=+np+=+40%2A0.10+=+4\"
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