Correct Answer: ÷, ×, +, =

Solution : Given:
50 * 10 * 20 * 5 * 105

Replace * with the mathematical signs and solve the equations one by one using the BODMAS.
Let's check the given options –
First option: ÷, ×, +, =
⇒ 50 ÷ 10 × 20 + 5 = 105
Solving the L.H.S of the equation –
= 5 × 20 + 5
= 100 + 5
= 105 = R.H.S.
Second option: ×, −, +, =
⇒ 50 × 10 − 20 + 5 = 105
Solving the L.H.S of the equation –
= 500 − 15
= 485 ≠ 105
Third option: ÷, ×, −, =
⇒ 50 ÷ 10 × 20 − 5 = 105
Solving the L.H.S of the equation –
= 5 × 20 − 5
= 100 − 5
= 95 ≠ 105
Fourth option: ×, ÷, +, =
⇒ 50 × 10 ÷ 20 + 5 = 105
Solving the L.H.S of the equation –
= 25 + 5
= 30 ≠ 105

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