Which two signs should be interchanged in the following equation to make it correct?
15 - 9 ÷ 6 × 10 + 5 = 25
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. + and -
| Understanding |
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Given: 15 - 9 ÷ 6 × 10 + 5 = 25 Let us check all the options: 1) × and ÷ The expression becomes: 15 - 9 × 6 ÷ 10 + 5 = 14.6 |
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2) + and ÷ The expression becomes: 15 - 9 + 6 × 10 ÷ 5 = 18 |
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3) × and - The expression becomes: 15 × 9 ÷ 6 - 10 + 5 = 17.5 |
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4) + and - The expression becomes: 15 + 9 ÷ 6 × 10 - 5 = 25 |