If ‘+’ means ‘–’, ‘–’ means ‘×’, ‘×’ means ‘÷’, ‘÷’ means ‘+’, then what will come in place of the question mark (?) in the following equation?
137 ÷ 56 × 7 – 6 + 31 =?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 154.
Given conditions: ‘+’ means ‘–’, ‘–’ means ‘×’, ‘×’ means ‘÷’, ‘÷’ means ‘+’
Given equation: 137 ÷ 56 × 7 – 6 + 31 =?
After interchanging the expression becomes:
= 137 + 56 ÷ 7 × 6 - 31
= 137 + 8 × 6 - 31
= 137 + 48 - 31
= 185 - 31 = 154