Correct Answer: ×, ×

Solution : Given:
4....3....4 = 48

Let's check the options –
First option: +, +
⇒ 4 + 3 + 4 = 48
On solving the L.H.S. of the equation, we get –
= 4 + 3 + 4
= 11 ≠ 48
Second option: +, –
⇒ 4 + 3 – 4 = 48
On solving the L.H.S. of the equation, we get –
= 4 + 3 – 4
= 3 ≠ 48
Third option: ×, +
⇒ 4 × 3 + 4 = 48
On solving the L.H.S. of the equation, we get –
= 4 × 3 + 4
= 12 + 4
= 16 ≠ 48
Fourth option: ×, ×
⇒ 4 × 3 × 4 = 48
On solving the L.H.S. of the equation, we get –
= 4 × 3 × 4
= 48

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