What will come in the place of the question mark (?) in the following equation if ‘+’ and ‘–’ are interchanged and ‘×’and ‘÷’ are interchanged?
161 ÷ 4 + 75 × 5 – 4 = ?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 633.
161 ÷ 4 + 75 × 5 – 4 = ?
After interchanging signs,
= 161 × 4 - 75 ÷ 5 + 4
= 161 × 4 - 15 + 4
= 644 - 15 + 4
= 629 + 4
= 633