Question

find the smallest number that must be added to 210 so that it becomes a perfect cube​

Answer 1

Answer: 6

${5}^{3} < 210 < {6}^{3} \\ 125 < 210 < 216$

Now

216-210=6

Therefore, 6 should be added to 210, it becomes a perfect cube.

210+6=216=6^3