What will come in the place of the question mark (?) in the following equation, if ‘+’ and ‘ב are interchanged and ‘−’ and ‘÷’ are interchanged?
51 ÷ 6 + 9 × 84 − 4 = ?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 18.
Given equation: 51 ÷ 6 + 9 × 84 − 4 = ?
After interchanging the sign:
51 - 6 × 9 + 84 ÷ 4 = ?
? = 51 - 54 + 21
? = 72 - 54 = 18