If '+' means '÷', '-' means '×', '×' means '+', and '÷' means '-', then what is the value of: 64 - 81 + 9 × 4 = ?A570B630C580D510Answer: C. 580 Read Explanation: The logic follows here is :SymbolMeaning+÷ - × x+ ÷ - Puting the given gode in the equation: 64 - 81 + 9×\times× 4 = ?=64×81÷9+4=64\times{81}\div{9}+4=64×81÷9+4=64×9+4=64\times9+4=64×9+4= 576 + 4= 580Hence, 580 is the correct answer. Read more in App