What will come in place of the question mark (?) in the following equation, if ‘×’ is replaced by ‘÷’, ‘÷’ is replaced by ‘+’, ‘+’ is replaced by ‘×’, and ‘-’ remains unchanged?
42 × 3 ÷ 4 + 9 - 17 = ?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 33.
Given equation: 42 × 3 ÷ 4 + 9 - 17 = ?
After interchanging signs, the equation becomes:
(42 ÷ 3) + 4 × 9 - 17 = ?
= 14 + (4 × 9) - 17
= (14 + 36) - 17
= 50 - 17
= 33