What will come in place of the question mark (?) in the following equation, if ‘+’ and ‘–’ are interchanged and ‘×’ and ‘÷’ are interchanged?
152 ÷ 6 + 1617 × 7 – 77 = ?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 758.
On interchanging signs,
= (152 × 6) - (1617 ÷ 7) + 77
= 912 - 231 + 77
= 989 - 231
= 758