document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=281096>Question 281096</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Edwin and Derek are archers. The probability that Edwin successfully hits a target is 0.7. The probability that Derek successfully hits a target is 0.6. Whenever they both shoot at a target, what is the probability that:\r<BR>\n" );
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document.write( "a) only one of them is successful\r<BR>\n" );
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document.write( "b) at least one of them is successful? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #204245 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=204245\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Prob that both will miss=0.3 * 0.4=.12<BR>\n" );
document.write( "Prob that both will hit = 0.7 * 0.6 = .42<BR>\n" );
document.write( "a) 1-(.42+.12)=.46 prob only one of them is successful.<BR>\n" );
document.write( "b) 1-.12=.88 prob at least one is successful.<BR>\n" );
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document.write( "Ed<BR>\n" );
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