What will come in the place of the question mark (?) in the following equation, if '+' and '-' are interchanged and '×' and '÷' are interchanged?
15 ÷ 4 - 128 + 123 × 3 = ?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 147.
Given equation: 15 ÷ 4 - 128 + 123 × 3 = ?
On interchanging the signs:
(15 × 4) + 128 - (123 ÷ 3) = ?
? = (60 + 128) - 41 = 188 - 41 = 147