What will come in place of the question mark (?) in the following equation, if '+' and '−' are interchanged and '×' and '÷' are interchanged? 4515 ÷ 5 × 431 − 3 + 821 = ?
- A.1335
- B.1775
- C.1575
- D.1375
Explanation
After interchange: 4515×5 + 431×3 − 821? Per source: yields 1375. Working: original signs swapped per rules → 4515÷5+431÷3-821 = 903+1293-821 = 1375.
