Correct Answer: ÷ and +

Solution : Given:
6 ÷ 24 + 6 × 7 – 5 = 29

Let's check each option –
First Option: ÷ and ×
On interchanging the mathematical signs, we get –
6 × 24 + 6 ÷ 7 – 5 = 29
On solving the L.H.S. of the equation –
= 6 × 24 + 6 ÷ 7 – 5
= 6 × 24 + 0.857 – 5
= 144 + 0.857 – 5
= 139.857 ≠ 29
Second Option: ÷ and +
On interchanging the mathematical signs, we get –
6 + 24 ÷ 6 × 7 – 5 = 29
On solving the L.H.S. of the equation –
= 6 + 24 ÷ 6 × 7 – 5
= 6 + 4 × 7 – 5
= 6 + 28 – 5
= 29
Third Option: ÷ and –
​​​​​​​On interchanging the mathematical signs, we get –
6 – 24 + 6 × 7 ÷ 5 = 29
On solving the L.H.S. of the equation –
= 6 – 24 + 6 × 7 ÷ 5
= 6 – 24 + 6 × 1.4
= 6 – 24 + 8.4
= –9.6 ≠ 29
Fourth Option: × and +
​​​​​​​On interchanging the mathematical signs, we get –
6 ÷ 24 × 6 + 7 – 5 = 29
On solving the L.H.S. of the equation –
= 6 ÷ 24 × 6 + 7 – 5
= 0.25 × 6 + 7 – 5
= 1.5 + 7 – 5
= 3.5 ≠ 29

So, only the second option satisfies the equation. Hence, the second option is correct.