What will come in place of the question mark (?) in the following equation if ‘+’ and ‘×’ are interchanged and ‘−’ and ‘÷’ are interchanged?
16 − 4 + 7 × 8 ÷ 1 = ?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 35.
After interchanging signs,
= (16 ÷ 4) × 7 + 8 - 1
= 4 × 7 + 8 - 1
= 28 + 8 - 1
=36 - 1 = 35