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| rev | Admin | (Created page with "An annuity having n payments of 1 has a present value of X. The first payment is made at the end of three years and the remaining payments are made at seven-year intervals thereafter. Determine X. <ul class="mw-excansopts"> <li><math display = "block">\frac{a_{\overline{7n+3}|} - a_{\overline{3}|}}{s_{\overline{3}|}}</math></li> <li><math display = "block">\frac{a_{\overline{7n+3}|}-a_{\overline{3}|}}{a_{\overline{7}|}}</math></li> <li><math display = "block">\frac{a_{...") | Nov 18'23 at 10:48 | +785 |