<p>In an arithmetic series, the first term is \(-7\) and the sum of the first \(20\) terms is \(620\).</p>
<ol class="abc-list"><li><div class="list-item-paragraph">Find the common difference.</div></li><li><div class="list-item-paragraph">Fund the value of the \(78^{th}\) term.</div></li></ol>

In an arithmetic series, the first term is \(-7\) and the sum of the first \(20\) terms is \(620\).

Arithmetic Progression

Sequence and Series

International Baccalaureate Mathematics: Applications and Interpretation Standard Level

Sequence and Series - Arithmetic Progression

Sequence and Series - Arithmetic Progression