9 is odd, so square [9] = 3 * 9 = 27kipkipod wrote:
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6 is even , so square [6] = (1/2) * 6 = 3
Therefore, square [9] * square [6] = 27 * 3, note here 27 is odd so it is equal to square [27], by definition of [m] when m is odd.
The correct answer is D.
