Question : Directions: What will come in place of the question mark (?) in the following equation if + and – are interchanged and × and ÷ are interchanged?
11 ÷ 4 + 8 × 2 – 1 = ?
Option 1: 41
Option 2: 40
Option 3: 39
Option 4: 43
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Correct Answer: 41
Solution :
Given:
11 ÷ 4 + 8 × 2 – 1 = ?
After interchanging + with – and × with ÷, the equation becomes –
= 11 × 4 – 8 ÷ 2 + 1
= 11 × 4 – 4 + 1
= 44 – 4 + 1
= 45 – 4
= 41
So, 41 is the required answer for the given equation. Hence, the first option is correct.
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