document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=313710>Question 313710</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Among th 10 students of a class, three of them have blue eyes.  If we pick randomly two students, what is the probability that \r<BR>\n" );
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document.write( "A) both students will have blue eyes\r<BR>\n" );
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document.write( "B) none of them will have blue eyes\r<BR>\n" );
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document.write( "C) At least one of them will have blue eyes </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #224307 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=224307\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Among th 10 students of a class, three of them have blue eyes. If we pick randomly two students, what is the probability that <BR>\n" );
document.write( "A) both students will have blue eyes<BR>\n" );
document.write( "# of ways to get 2 blue: 3C2 = 3<BR>\n" );
document.write( "# of ways to get 2 randomly = 10C2 = 45<BR>\n" );
document.write( "P(2 blue) = 3/45 = 1/15<BR>\n" );
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document.write( "B) none of them will have blue eyes<BR>\n" );
document.write( "# of ways to get no blue: 7C2 = 21<BR>\n" );
document.write( "P(2 non-blue) = 21/45 = 7/15<BR>\n" );
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document.write( "C) At least one of them will have blue eyes<BR>\n" );
document.write( "= 1 - P(2 non-blue) <BR>\n" );
document.write( "= 1- 7/15<BR>\n" );
document.write( "= 8/15<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( " </SPAN>\n" );
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