https://artofproblemsolving.com/wiki/index.php?title=1972_AHSME_Problems/Problem_19&feed=atom&action=history 1972 AHSME Problems/Problem 19 - Revision history 2021-11-30T04:15:18Z Revision history for this page on the wiki MediaWiki 1.31.1 https://artofproblemsolving.com/wiki/index.php?title=1972_AHSME_Problems/Problem_19&diff=78890&oldid=prev Dot22: Created page with "==Solution== We begin by evaluating the sum of the first [itex]n[/itex] terms of the sequence with [itex]1[/itex], [itex]2[/itex], and [itex]3[/itex]. We find that the sum of..." 2016-06-10T15:56:52Z <p>Created page with &quot;==Solution== We begin by evaluating the sum of the first &lt;math&gt;n&lt;/math&gt; terms of the sequence with &lt;math&gt;1&lt;/math&gt;, &lt;math&gt;2&lt;/math&gt;, and &lt;math&gt;3&lt;/math&gt;. We find that the sum of...&quot;</p> <p><b>New page</b></p><div>==Solution==<br /> <br /> We begin by evaluating the sum of the first &lt;math&gt;n&lt;/math&gt; terms of the sequence with &lt;math&gt;1&lt;/math&gt;, &lt;math&gt;2&lt;/math&gt;, and &lt;math&gt;3&lt;/math&gt;. We find that the sum of the first term of the sequence is &lt;math&gt;1&lt;/math&gt;, the sum of the first two terms is &lt;math&gt;4&lt;/math&gt;, and the sum of the first three terms &lt;math&gt;11&lt;/math&gt;. From here, we can simply guess and check the answer choices and will find that only &lt;math&gt;\boxed{D}&lt;/math&gt; works.</div> Dot22