Correct Answer: + and ÷

Solution : Given:
294 + 14 × 4 ÷ 16 – 67 = 33

Replace the given symbols in the options one by one with the original symbols in the given equation.
First option: + and ÷
= 294 ÷ 14 × 4 + 16 – 67 = 33
= 21 × 4 + 16 – 67
= 84 + 16 – 67
= 100 – 67
= 33
Second option: × and ÷
= 294 + 14 ÷ 4 × 16 – 67
= 294 + 3.5 × 16 – 67
= 294 + 56 – 67
= 350 – 67
= 283 ≠ 33
Third option: + and –
= 294 – 14 × 4 ÷ 16 + 67
= 294 – 14 × 0.25 + 67
= 294 – 3.5 + 67
= 361 – 3.5
= 357.5 ≠ 33
Fourth option: – and ÷
= 294 + 14 × 4 – 16 ÷ 67
= 294 + 14 × 4 – 0.2388
= 294 + 56 – 0.2388
= 350 – 0.2388
= 349.7612 ≠ 33

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