Analysis shows that nickel oxide has the formula $Ni_{0.98}O_{1.00}$. What fractions of nickel exist as $Ni^{2+}$ and $Ni^{3+}$ ions?

Question

$\begin{array}{1 1}95.918,4.081\\75.918,6.081\\65.918,3.081\\45.918,8.081\end{array} $