MCQOPTIONS
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| 1. |
The following equation is incorrect. Which two signs should be interchanged to correct the equation?7 × 16 + 20 - 20 ÷ 10 = 31 |
| A. | ÷ and - |
| B. | × and - |
| C. | + and ÷ |
| D. | - and + |
| Answer» C. + and ÷ | |