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 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 least, the parts of the equation that contain 'Addition' and 'Subtraction' should be calculated. Given expression is, 36 - [48 - {45 - (17 × 3 - 3 × 2)}] + 17 = 36 - [48 - {45 - (51 - 6)}] + 17 = 36 - [48 - {45 - 45}] + 17 = 36 - [48 - 0] + 17 = 53 - 48 = 5