Correct Answer: 12 and 9

Solution : Given:
12 × 4 – 8 + 9 ÷ 3 = 32

Replace the given numbers in the options one by one with the original numbers in the given equation.
First option: 4 and 9
⇒ 12 × 9 – 8 + 4 ÷ 3 = 32
Solving the L.H.S. of the equation –
= 12 × 9 – 8 + 1.34
= 108 – 8 + 1.34
= 101.34 ≠ 32
Second option: 12 and 3
⇒ 3 × 4 – 8 + 9 ÷ 12 = 32
Solving the L.H.S. of the equation –
= 3 × 4 – 8 + 0.75
= 12 – 8 + 0.75
= 4.75 ≠ 32
Third option: 12 and 9
⇒ 9 × 4 – 8 + 12 ÷ 3 = 32
Solving the L.H.S. of the equation –
= 9 × 4 – 8 + 4
= 36 – 8 + 4
= 32 = R.H.S.
Fourth option: 32 and 12
⇒ 32 × 4 – 8 + 9 ÷ 3 = 12
Solving the L.H.S. of the equation –
= 32 × 4 – 8 + 3
= 128 – 8 + 3
= 123 ≠ 12

So, only the third option satisfies the R.H.S. of the given equation. Hence, the third option is correct.