$$\frac{256 × 256 - 144 × 144}{112}$$     is equal to :

A. 420

B. 400

C. 360

D. 320

Answer: Option B

Solution(By Examveda Team)

Given expression
$$\eqalign{ & = \frac{{{{\left( {256} \right)}^2} - {{\left( {144} \right)}^2}}}{{112}} \cr & = \frac{{\left( {256 + 144} \right)\left( {256 - 144} \right)}}{{112}} \cr & = \frac{{\left( {400 \times 112} \right)}}{{112}} \cr & = 400 \cr} $$