2016 AMC 8

Complete problem set with solutions and individual problem pages

Problem 7 Easy

Which of the following numbers is not a perfect square?

  • A.

    1^{2016}

  • B.

    2^{2017}

  • C.

    3^{2018}

  • D.

    4^{2019}

  • E.

    5^{2020}

Answer:B

Our answer must have an odd exponent in order for it to not be a square. Because 4 is a perfect square, 4^{2019} is also a perfect square, so our answer is \boxed{\textbf{(B) }2^{2017}}.

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