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Not a Perfect Square

Source: 2016 AMC 8 #7

November 23, 2016
AMC 82016 AMC 8

Problem Statement

Which of the following numbers is not a perfect square?
<spanclass=′latex−bold′>(A)</span>12016<spanclass=′latex−bold′>(B)</span>22017<spanclass=′latex−bold′>(C)</span>32018<spanclass=′latex−bold′>(D)</span>42019<spanclass=′latex−bold′>(E)</span>52020<span class='latex-bold'>(A) </span>1^{2016}\qquad<span class='latex-bold'>(B) </span>2^{2017}\qquad<span class='latex-bold'>(C) </span>3^{2018}\qquad<span class='latex-bold'>(D) </span>4^{2019}\qquad <span class='latex-bold'>(E) </span>5^{2020}
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