If '+' means '×', '×' means '-', '-' means '+' then 22 + 5 × 2 - 13 = ?
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Correct answer: D
Explanation
The correct answer is option 4 i.e. 121.
Given equation: 22 + 5 × 2 - 13 = ?
On interchanging the sign:
22 × 5 - 2 + 13 = ?
? = 110 - 2 + 13
? = 123 - 2 = 121