What will come in the place of the question mark (?) in the following equation, if ‘+’ and ‘÷‘ are interchanged and ‘−’ and ‘×’ are interchanged?
18 ÷ 15 + 5 × 3 − 4 = ?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 9.
Given equation: 18 ÷ 15 + 5 × 3 − 4 = ?
After interchanging the signs:
18 + 15 ÷ 5 - 3 × 4 = ?
? = 18 + 3 - 12 = 21 - 12 = 9