Correct Answer: ÷ and +

Solution : Given:
459 + 17 × 12 ÷ 72 – 47 = 349

Replace the given symbols in the options one by one with the original symbols in the given equation.
First option: ÷ and +
⇒ 459 ÷ 17 × 12 + 72– 47 = 349
= 27 × 12 + 72 – 47
= 324 + 72 – 47
= 349
Second option: ÷ and –
⇒ 459 + 17 × 12 – 72 ÷ 47 = 349
= 459 + 17 × 12 – 1.53
= 459 + 204 – 1.53
= 661.47 ≠ 349
Third option: + and ×
⇒ 459 × 17 + 12 ÷ 72 – 47 = 349
= 459 × 17 + 0.167 – 47
= 7803 + 0.167 – 47
= 7756.167 ≠ 349
Fourth option: – and +
⇒ 459 – 17 × 12 ÷ 72 + 47 = 349
= 459 – 17 × 0.167 + 47
= 459 – 2.839 + 47
= 503.161 ≠ 349

So, only the first option satisfies the equation. Hence, the first option is correct.