Combinations

<p><a href="https://www.prepswift.com/quizzes/quiz/prepswift-combinations" target="_blank">Combinations Exercise</a></p> <p><strong>NOTE</strong>: about 3:18 into the video, Greg says something on the lines of &quot;you&#39;ll shake hands with 435 people&quot;. Clearly he meant to say that &quot;there will be 435 handshakes in total&quot;</p>