Correct Answer: ÷, ×, +, –, =

Solution : Given:
65 * 5 * 17 * 24 * 21 * 224

Replace * with the mathematical signs and solve the equations one by one using BODMAS.
First options: ÷, ×, +, –, =
65 ÷ 5 × 17 + 24 – 21 = 224
On solving the L.H.S. of the given equation –
= 65 ÷ 5 × 17 + 24 – 21
= 13 × 17 + 24 – 21
= 221 + 24 – 21
= 224
Second option: +, ×, –, ÷, =
65 + 5 × 17 – 24 ÷ 21 = 224
On solving the L.H.S. of the given equation –
= 65 + 5 × 17 – 24 ÷ 21
= 65 + 5 × 17 – 1.143
= 65 + 85 – 1.143
= 148.857 ≠ 224
Third option: ÷, ×, –, +, =
65 ÷ 5 × 17 – 24 + 21 = 224
On solving the L.H.S. of the given equation –
= 13 × 17 – 24 + 21
= 221 – 24 + 21
= 218 ≠ 224
Fourth option: ×, +, –, ÷, =
65 × 5 + 17 – 24 ÷ 21 = 224
On solving the L.H.S. of the given equation –
= 65 × 5 + 17 – 1.14
= 325 + 17 – 1.14
= 340.86 ≠ 224

So, the first option satisfies the equation. Hence, the first option is correct.