| Question | Which two numbers should be interchanged to make the given equation correct? 36 × 81 ÷ 9 – (88 ÷ 4) + 14 + (22 + 7) = 169 | |
| Type | multiple_choice | |
| Option | 36 and 14 | correct |
| Option | 81 and 36 | incorrect |
| Option | 9 and 36 | incorrect |
| Option | 14 and 22 | incorrect |
| Solution | LHS = 36 × 81 ÷ 9 – (88 ÷ 4) + 14 + (22 + 7) Take option A, = 14 × 81 ÷ 9 – (88 ÷ 4) + 36 + (22 + 7) = 14 × 9 – 22 + 36 + 29 = 126 – 22 + 36 + 29 = 169 LHS = RHS Hence, option A is correct. | |
