If "+' means '-', '-' means '×', '×' means '÷', '÷' means '+', then 20 + 5 × 4 - 2 = ?
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Correct answer: D
Explanation
The correct answer is option 4 i.e. 17.5.
Given equation: 20 + 5 × 4 - 2 = ?
On interchanging the sing:
20 - 5 ÷ 4 × 2 = ?
? = 20 - 2.5 = 17.5