Correct Answer: – and ×

Solution : Given:
39 ÷ 3 – 11 + 57 × 29 = 171

Let's check the options —
First option: – and ×
⇒39 ÷ 3 × 11 + 57 – 29 = 171
13 × 11 + 57 – 29 = 171
143 + 57 – 29 = 171
200 – 29 = 171
171 = 171
Second option: – and +
⇒39 ÷ 3 + 11 – 57 × 29 = 171
13 + 11 – 1653 = 171
–1629 ≠ 171
Third option: ÷ and +
⇒39 + 3 – 11 ÷ 57 × 29 = 171
39 + 3 – 0.192 × 29 = 171
42 – 5.59 = 171
36.41 ≠ 171
Fourth option: ÷ and –
⇒39 – 3 ÷ 11+ 57 × 29 = 171
39 - 0.2 + 1653 = 171
1691.8 ≠ 171

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