What will come in the place of the question mark (?) in the following equation, if ‘+’ and ‘−’ are interchanged and ‘×’ and ‘÷’ are interchanged?
45 ÷ 13 − 286 × 2 + 68 =?
Given:
45 ÷ 13 − 286 × 2 + 68 = ?
(Where ‘+’ and ‘−’ are interchanged, and ‘×’ and ‘÷’ are interchanged)
Logic:
Interchange the operations:
‘+’ → ‘−’
‘−’ → ‘+’
‘×’ → ‘÷’
‘÷’ → ‘×’
Explanation (applied left to right):
Original: 45 ÷ 13 − 286 × 2 + 68
After interchanging: 45 × 13 + 286 ÷ 2 − 68
Now, solve step by step:
45 × 13 = 585
286 ÷ 2 = 143
So, 585 + 143 − 68 = 660
Final Answer:
660
Final Correct Option:
(c) 660
English
100 Questions
100 Marks
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