Which of the following is equal to the cube of a non-integer?

A. \(-64\) can be written as \(-8 * -8 * - 8\)
Since we multiplying three negative integers to get -64, this can't be our answer.

B. \(- 1\) can be written as \(-1 * -1 * -1\)
Since we multiplying three negative integers to get -1, this can't be our answer.

C. \(8\) can be written as \(2 * 2 * 2\)
Since we multiplying three positive integers to get 8, this can't be our answer.

D. \(9\) can be written as \(3^{\frac{2}{3}}\) * \(3^{\frac{2}{3}}\) * \(3^{\frac{2}{3}}\) = \((3^3)^{\frac{2}{3}}\)
Since we multiplying three postive non-integers to get 9, this has to be our answer.

E. \(27\) can be written as \(3 * 3 * 3\)
Since we multiplying three positive integers to get 27, this can't be our answer.

To practise ten 700+ Level Number Properties Questions attempt the The E-GMAT Number Properties Knockout