If ‘+’ means ‘×’, ‘-‘ means ‘+’, ‘÷’ means ‘-‘ and ‘×’ means ‘÷’ then which equation is correct?
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Option 3 : 11 - 1 + 4 × 2 + 3 ÷ 7 = 10
To get the answer, we need to solve each equation
1) 8 + 2 - 1 + 1 ÷ 4 × 3 = 8
→ 8 × 2 + 1 × 1 - 4 ÷ 3 = 15.67 ≠ 8
2) 7 ÷ 9 × 3 - 4 + 4 ÷ 1 = 20
→ 7 - 9 ÷ 3 + 4 × 4 - 1 = 19 ≠ 20
3) 11 - 1 + 4 × 2 + 3 ÷ 7 = 10
→ 11 + 1 × 4 ÷ 2 × 3 - 7 = 10
4) 10 + 4 - 1 ÷ 4 × 1 = 9
→ 10 × 4 + 1 - 4 ÷ 1 = 37 ≠ 9
Therefore 11 - 1 + 4 × 2 + 3 ÷ 7 = 10 is the correct equation.
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