document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=387435>Question 387435</A>: <I><SPAN STYLE=\"word-break: break-all;\"> my question is this?<BR>\n" );
document.write( "1.In a box of 12 parts 5 are defective. Two parts are selected with out replacement. What is the probability that a least one of the parts is defective? <BR>\n" );
document.write( "2. A pizza can be made with 7 different cheese and 2 of 8 different topping. how many different  combinations are possible.\r<BR>\n" );
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document.write( "i want to know how to solve this problem? step-by-step leading to the answer. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #273909 by </B><A HREF=/tutors/aboutme.mpl?userid=edjones><B>edjones(8007)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=edjones><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/cgi-bin/show-face.mpl?user=edjones><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=273909\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 1) <BR>\n" );
document.write( "nCr=combination of n things taken r at a time=n!/((n-r)!*r!)<BR>\n" );
document.write( "Probability none are defective: 7C2/12C2 = 21/66 = 7/22<BR>\n" );
document.write( "Probability none at least one is defective: 1- 7/22 = 15/22<BR>\n" );
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document.write( "Ed </SPAN>\n" );
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