999 998999 × 999 is equal to :

Answer: Option A

$$\begin{array}{rl}& \Rightarrow \text{999}\frac{998}{999}\times 999\\ & \Rightarrow \left(999+\frac{998}{999}\right)\times 999\\ & \Rightarrow \left[\left(1000-1\right)+\frac{998}{999}\right]\times 999\\ & \Rightarrow 999000-999+998\\ & \Rightarrow 998999\end{array}$$