_:n68b968b82cb44fbaad4d10377b7bac43xb0
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.doubtnut.com/question-answer/find-the-coefficient-of-x50-in-the-expansion-of-1-x101xx1-x-x2100dot-30289>