Number TheoryHardHard Number Theory ShareHard Number Theory · Hard problemEvaluate ∑k=18⌊6k9⌋\displaystyle\sum_{k=1}^{8}\left\lfloor \frac{6k}{9} \right\rfloork=1∑8⌊96k⌋ by counting lattice points.Check Show answer Walk through it step by step Practice more like this Review this concept