If '+' means '×', '×' means '–', '–' means '÷', and '÷' means '+', then what will come in
place of the (?) in the following equation?
9 + 3 ÷ 2 × 135 – 15 =?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 20.
Given conditions: '+' means '×', '×' means '–', '–' means '÷', and '÷' means '+'
Given equation: 9 + 3 ÷ 2 × 135 – 15
After interchanging the expression becomes:
= 9 × 3 + 2 - 135 ÷ 15
= 9 × 3 + 2 - 9
= 27 + 2 - 9
= 29 - 9 = 20