Question : Directions: What will come in the place of (?) in the following equation, if + and × are interchanged and also – and ÷ are interchanged?
20 ÷ 5 × 10 – 5 + 2 = ?
Option 1: 4
Option 2: 19
Option 3: 12
Option 4: 2
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Correct Answer: 19
Solution :
Given:
20 ÷ 5 × 10 – 5 + 2 = ?
After interchanging the given mathematical signs, we get –
= 20 – 5 + 10 ÷ 5 × 2
= 20 – 5 + 2 × 2
= 20 – 5 + 4
= 19
So, 19 is the answer to the given equation. Hence, the second option is correct.
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