document.write( "Question 1192107: After studying Mr.X's family history, a doctor determines that the probability of any 612) child born to this couple having a gene for disease X is 1 out of 4. If Mr.X has three children, what is the probability that exactly two of the children have the gene for disease X? \n" ); document.write( "
Algebra.Com's Answer #824008 by ikleyn(52803)\"\" \"About 
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\n" ); document.write( "After studying Mr.X's family history, a doctor determines that the probability of any 612) child
\n" ); document.write( "born to this couple having a gene for disease X is 1 out of 4. If Mr.X has three children,
\n" ); document.write( "what is the probability that exactly two of the children have the gene for disease X?
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