Question : Directions: What will come in the place of the question mark (?) in the following equation if + and – are interchanged and × and ÷ are interchanged?
13 ÷ 145 × 29 – 69 + 27 = ?
Option 1: 79
Option 2: 102
Option 3: 107
Option 4: 114
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Correct Answer: 107
Solution :
Given:
+ and – and × and ÷ are interchanged.
13 ÷ 145 × 29 – 69 + 27 = ?
After interchanging the symbols according to the question, the equation is as follows –
⇒ 13 × 145 ÷ 29 + 69 – 27
= 13 × 5 + 69 – 27
= 65 + 69 – 27
= 107
So, the required answer after solving the equation is 107. Hence the third option is correct.
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