<div>References:<br></div><div><br></div><p>Benjamin, A. T. (2009).&nbsp;<i>Discrete Mathematics</i>. The Great Courses. Print.<br></p><p>Multichoose. Retrieved from&nbsp;<a href="http://mathworld.wolfram.com/Multichoose.html">http://mathworld.wolfram.com/Multichoose.html</a><br></p><div>Wolfram|Alpha: Computational Knowledge Engine. Retrieved from&nbsp;<a href="http://www.wolframalpha.com/input/?i=multichoose">http://www.wolframalpha.com/input/?i=multichoose</a><br></div>