SSC JE Civil Engineering 2017 Set 1 Solved Paper

Volume of bricks with mortar
Volume of 1 brick with mortar = 200 × 100 × 100
(10 mm mortar thickness on all sides) = 0.2 × 0.1 × 0.1
Volume of brick with mortar = 0.002 Cum $\left({\mathit{m}}^3\right)$
Therefore, Number of bricks required for 1 cubic metre = $\frac{1}{0.002}$ = 500 No.s