Question : Directions: What will come in the place of the question mark (?) in the following equation if + and – are interchanged and × and ÷ are interchanged?
11 ÷ 42 × 3 – 69 + 25 = ?
Option 1: 189
Option 2: 210
Option 3: 198
Option 4: 205
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Correct Answer: 198
Solution :
Given:
11 ÷ 42 × 3 – 69 + 25 = ?
After interchanging the signs as per the instructions, we get –
= 11 × 42 ÷ 3 + 69 – 25
= 11 × 14 + 69 – 25
= 154 + 69 – 25
= 223 – 25
= 198
So, 198 is the required answer for the equation. Hence, the third option is correct.
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