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| rev | Admin | (Created page with "'''Solution: E''' <math display="block"> s_{\overline{2 n} \mid}=s_{\overline{n} \mid}+(1+i)^n s_{\overline{n} \mid} \implies 240=60+60(1+i)^n \text {. } </math> Thus <math>(1+i)^n=3</math>. Hence <math display="block"> s_{\overline{3n} \mid}=s_{\overline{n} \mid}+(1+i)^n s_{\overline{2n} \mid}=60+3(240)=780 . </math> '''References''' {{cite web |url=https://web2.uwindsor.ca/math/hlynka/392oldtests.html |last=Hlynka |first=Myron |website=web2.uwindsor.ca | title...") | Nov 26'23 at 21:30 | +569 |