hard · GMAT Quant
For any integer y, let Q(y) = lfloor (y)/(3) rfloor + lfloor (y+2)/(3) rfloor - lfloor (2y)/(3) rfloor.
Which of the following gives all possible values of Q(y) for all integers y?
- 0
- 1
- 0, 1
- -1, 0
- 0, 1, 2
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