Correct Answer: ×, –, =

Solution : Given:
6 * 4 * 12 * 12

Let's check the options –
First option: +, –, =
⇒ 6 + 4 – 12 = 12
Solving the L.H.S. of the equation –
= 6 + 4 – 12
= 10 – 12
= –2 ≠ 12
Second option: +, =, ÷
⇒ 6 + 4 = 12 ÷ 12
= 10 ≠ 1
Third option: =, –, ÷
⇒ 6 = 4 – 12 ÷ 12
Solving the R.H.S. of the equation –
= 4 – 12 ÷ 12
= 4 – 1
= 3 ≠ 6
Fourth option: ×, –, =
⇒ 6 × 4 – 12 = 12
Solving the L.H.S. of the equation –
= 6 × 4 – 12
= 24 – 12
= 12 (L.H.S. = R.H.S.)

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