Correct Answer: ÷ and ×

Solution : Given:
15 × 3 ÷ 15 – (45 × 3) – 10 + (13 ÷ 2) = 76

Replace the given symbols in the options one by one with the original symbols in the given equation.
First option: ÷ and ×
= 15 ÷ 3 × 15 – (45 ÷ 3) – 10 + (13 × 2)
= 75 – 15 – 10 + 26
= 76
Second option: × and +
= 15 + 3 ÷ 15 – (45 + 3) – 10 × (13 ÷ 2)
= 15 + 0.2 – 48 – 65
= –97.8 ≠ 76
Third option: × and –
= 15 – 3 ÷ 15 × (45 – 3) × 10 + (13 ÷ 2)
= 15 – 0.2 × 42  × 10 + 6.5
= 15 – 84 + 6.5
= –62.5 ≠ 76
Fourth option: ÷ and +
= 15 × 3 + 15 – (45 × 3) – 10 ÷ (13 + 2)
= 45 + 15 – 135 – 10 ÷ 15
= 60 – 135 – 0.67
= –75.67 ≠ 76

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