Correct Answer - Option 2 : 800
On changing the signs as per the instructions we get,
(11 - 3) × 2 × (40 ÷ 2) ÷ 4 × (1 × 10)
By using BODMAS Rule,
(11 - 3) × 2 × (40 ÷ 2) ÷ 4 × (1 × 10)
= (8) × 2 × (20) ÷ 4 × 10
= 8 × 2 × 5 × 10
= 800
Hence, "800" is the correct answer.