Activity solutions<a class="anchor" aria-label="anchor" href="#factorial-sols"><i class="fas fa-link"></i></a>
</h3>
<div id="factorial-a1sol" class="section level4" number="15.0.10.1">
<h4>
<span class="header-section-number">15.0.10.1</span> Activity 1<a class="anchor" aria-label="anchor" href="#factorial-a1sol"><i class="fas fa-link"></i></a>
</h4>
<div class="webex-solution">
<button>
Activity 1
</button>
<div class="sourceCode" id="cb317"><pre class="downlit sourceCode r">
<code class="sourceCode R"><s