Correct Answer: × and ÷

Solution : Given:
729 × 9 – (56 – 6) × 5 ÷ 2 + 152 × 19 = 69

Replace the given symbols according to the options one by one with the original symbols in the given equation.
First option: × and +
= 729 + 9 – (56 – 6) + 5 ÷ 2 × 152 + 19
= 738 – 50 + 380 + 19
= 1087 ≠ 69
Second option: × and ÷
= 729 ÷ 9 – (56 – 6) ÷ 5 × 2 + 152 ÷ 19
= 81 – 50 ÷ 5 × 2 + 8
= 81 – 20 + 8
= 69
Third option: ÷ and –
= 729 × 9 ÷ (56 ÷  6) × 5 – 2 + 152 × 19
= 6561 ÷ (9.34) × 5 – 2 + 2888
= 702.46 × 5 ÷ 2 + 2888
= 4644.15 ≠ 69
Fourth option: + and –
= 729 × 9 + (56 + 6) × 5 ÷ 2 – 152 × 19
= 6561 + 62 × 5 ÷ 2 –  2888
= 6561 + 155 –  2888
= 3828 ≠ 69

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