document.write( "Question 166578: A single die is tossed thirteen times. Find the probability that exactly eleven of the tosses show a \"three.\" \n" ); document.write( "
Algebra.Com's Answer #122771 by edjones(8007)\"\" \"About 
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The chance of a 3 on one toss is 1/6
\n" ); document.write( "Let a=5/6 and b=1/6
\n" ); document.write( "(a+b)^13
\n" ); document.write( "a^2b^11 is the term we need.
\n" ); document.write( "the coefficient of this term is nCr=13C11=78
\n" ); document.write( "78a^2b^11
\n" ); document.write( "=78*(5/6)^2*(1/6)^11
\n" ); document.write( "=325/2176782336 or 1.49303*10^-7 A very small number, indeed.
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