Concept∶ Follow BODMAS rule to solve this question, as per the order given below. Step - 1∶ Parts of an equation enclosed in 'Brackets' must be solved first, and following BODMAS rule in the bracket - Step - 2∶ Any mathematical 'Of' or 'Exponent' must be solved next. Step - 3∶ Next, the parts of the equation that contain 'Division' and 'Multiplication' are calculated. Step - 4∶ Last but not the least, the parts of the equation that contain 'Addition' and 'Subtraction' should be calculated. Calculation∶ [{34 – (2)2} × 5] - [42 × 8 + (4 × 4)] = ? ⇒ {(34 – 4) × 5} - {(16 × 8 + 16)} = ? ⇒ (30 × 5) - (128 + 16) = ? ⇒ ? = 150 – 144 = 6