Given equation: 84 + 12 × 9 ÷ 13 - 21 = ?
BODMAS Table:
Operation preference wiseBracketsOrders, ofDivisionMultiplicationAdditionSubtractionSymbol[],,()(power),√(root),of÷×+−
Now, if ‘+’ and ‘÷’ are interchanged, and ‘×’ and ‘-’ are interchanged, then:
=> 84 ÷ 12 - 9 + 13 × 21 = ?
=> 7 - 9 + 13 × 21 = ?
=> 7 - 9 + 273 = ?
=> 280 - 9 = 271
Hence, the correct answer is "Option D".