Question : Directions: Which two signs should be interchanged to make the given equation correct? 17 + 10 × 5 ÷ 9 + 18 = 53
Option 1: + and ÷
Option 2: + and ×
Option 3: + and –
Option 4: × and ÷
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Correct Answer: × and ÷
Solution : Given: 17 + 10 × 5 ÷ 9 + 18 = 53
Let's check the options – First option: + and ÷ In the given equation, two + signs are present, and it's unclear which one should be interchanged. So, this option is incorrect. Second option: + and × In the given equation, two + signs are present, and it's unclear which one should be interchanged. So, this option is incorrect. Third option: + and – In the given equation, two + signs are present, and there is no – sign. So, this option is incorrect. Fourth option: × and ÷ On interchanging the mathematical signs, we get – = 17 + 10 ÷ 5 × 9 + 18 = 17 + 2 × 9 + 18 = 17 + 18 + 18 = 53
So, only the fourth option satisfies the given equation. Hence, the fourth option is correct.
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