Correct Answer: × and –

Solution : Given:
171 ÷ 3 – 16 + 72 × 412 = 572

Replace the given symbols in the options one by one with the original symbols in the given equation.
First option: × and –
= 171 ÷ 3 × 16 + 72 – 412
= 57 × 16 + 72 – 412
= 912 + 72 – 412
= 984 – 412
= 572
Second option: ÷ and –
= 171 – 3 ÷ 16 + 72 × 412
= 171 – 0.1875 + 72 × 412
= 171 – 0.1875 + 29664
= 29835 – 0.1875
= 29834.8125 ≠ 572
Third option: + and ÷
= 171 + 3 – 16 ÷ 72 × 412
= 171 + 3 – 0.22 × 412
= 171 + 3 – 90.64
= 174 – 90.64
= 83.36 ≠ 572
Fourth option: – and +
= 171 ÷ 3 + 16 – 72 × 412
= 57 + 16 – 72 × 412
= 57 + 16 – 29664
= 73 – 29664
= –29591 ≠ 572

Here, only the first option satisfies the R.H.S. of the given equation. Hence, the first option is correct.