<p><a href="https://www.prepswift.com/quizzes/quiz/prepswift-mutually-exclusive-sets" target="_blank">Mutually Exclusive Sets Exercise</a></p>
<p><strong>Note</strong>: around 2 minutes and 30 seconds into the video, Greg says that the sets of integers and solutions to the equation a<sup>3</sup> + b<sup>3</sup> = c<sup>3</sup> are mutually exclusive. This is true only if a, b and c are positive - which we forgot to mention.</p>