Correct Answer: 17

Solution : Given:
a represents division; b represents addition; c represents subtraction; and d represents multiplication.
24 a 6 d 4 b 9 c 8 =?

On replacing the symbols with the mathematical signs, we get –
= 24 ÷ 6 × 4 + 9 – 8
= 4 × 4 + 9 – 8
= 16 + 9 – 8
= 25 – 8
= 17

So, 17 is the answer to the given equation. Hence, the third option is correct.