Question : Directions: What will come in the place of the question mark (?) in the following equation if + and – are interchanged and × and ÷ are interchanged?
58 – 17 ÷ 6 + 322 × 23 = ?
Option 1: 153
Option 2: 138
Option 3: 161
Option 4: 146
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Correct Answer: 146
Solution :
Given:
58 – 17 ÷ 6 + 322 × 23 = ?
After interchanging + with –, and × with ÷, the equation will be as follows –
= 58 + 17 × 6 – 322 ÷ 23
= 58 + 17 × 6 – 14
= 58 + 102 – 14
= 146
So, 146 is the required number. Hence, the fourth option is correct.
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