Question

how many digits are there in the cube root of the following
a) 200987, b) 90879879876, c)23456,

Answer 1

$$\begin{gathered} \left(\mathrm{a}\right). \\ \overline{200}\overline{987} \\ \mathrm{Cube}\mathrm{root}\mathrm{will}\mathrm{have}2\mathrm{digits}. \\ \left(\mathrm{b}\right). \\ \overline{90}\overline{879}\overline{879}\overline{876} \\ \mathrm{cube}\mathrm{root}\mathrm{will}\mathrm{have}4\mathrm{digits}. \end{gathered}$$

Similarly you can do the other part.