Correct option is D
Given:
‘+ means ‘÷’
‘–' means ‘×’
‘÷’ means ‘+’
‘×’ means ‘–’
2 – 1 × 4 ÷ 4 + 2 = ?
After interchanging the sing, we get following equation-
2 × 1 - 4 + 4 ÷ 2 = ?
2 × 1 - 4 + 2 = ?
2 - 4 + 2 = ?
4 - 4 = ?
? = 0
Correct answer is (d) 0