| Question | Which of the following pairs of numbers and signs, when their positions are interchanged, will correctly solve the given mathematical equation? 17 × 15 + 3 – 11 ÷ 3 = 45 | |
| Type | multiple_choice | |
| Option | 15 and 11, + and × | correct |
| Option | 17 and 3, – and ÷ | incorrect |
| Option | 15 and 11, – and × | incorrect |
| Option | 15 and 11, + and – | incorrect |
| Solution | Solve by option (a) 17 × 15 + 3 – 11 ÷ 3 = 45 ⇒ 17 + 11 × 3 – 15 ÷ 3 ⇒ 17 + 33 – 5 ⇒ 50 – 5 = 45 | |
