document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1136645>Question 1136645</A>: <I><SPAN STYLE=\"word-break: break-all;\"> determine the number of terms n in each geometric series. <BR>\n" );
document.write( "Given that a1=3 r=6 and Sn=129 </SPAN>\n" );
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document.write( "a1=3; r=6....<br><BR>\n" );
document.write( "S1 = 3<br><BR>\n" );
document.write( "S2 = 3+18 = 21<br><BR>\n" );
document.write( "S3 = 3+18+108 = 129<br><BR>\n" );
document.write( "ANSWER: n=3 </SPAN>\n" );
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