What will come in the place of ‘?' in the following equation, if ‘+’ and ‘−' are interchanged?
47 + 10 × 3 − 32 ÷ 8 = ?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 21.
Given equation: 47 + 10 × 3 − 32 ÷ 8 = ?
On interchanging the signs:
47 - 10 × 3 + 32 ÷ 8 = ?
? = 47 - 30 + 4 = 51 - 30 = 21