document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=378768>Question 378768</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In a group of 16 people, 7 people have studied Russian, 9 have studied Chinese, and 3 have not studied either. How many of these people have studied both Russian and Chinese? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #269059 by </B><A HREF=/tutors/aboutme.mpl?userid=robertb><B>robertb(5830)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=robertb><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=robertb><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=269059\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 16 - 3 = 13 people who have not studied either Chinese or Russian.  Hence N(Chinese OR Russian) = N(Chinese) + N(Russian) - N(Russian AND Chinese) gives 13 = 9 + 7 - N(Russian AND Chinese), or N(Russian AND Chinese) = 9+7 - 13 = 3. </SPAN>\n" );
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