If ‘+’ means ‘×’, ‘-’ means ‘÷’, ‘×’ means ‘+’, and ‘÷‘ means ‘-', then which of the following equation would be correct? 

Given equation: 63 ÷ 84 + 7 - 6 × 48.

Decoding the given information :

Now, checking the options with replacing the sign from left to right and using BODMAS rule, we get :

Option 1) 32 ÷ 8 × 4 + 64 - 16 = 48 

After interchanging the symbols, we get;

⇒ 32 - 8 + 4 × 64 ÷ 16 = 48

⇒ 32 - 8 + 4 × 4 = 48

⇒ 32 - 8 + 16 = 48

⇒ 48 - 8 = 48

⇒ 40 ≠ 48

⇒ LHS ≠ RHS

Option 2) 24 × 4 + 4 ÷ 64 - 16 = 60

After interchanging the symbols, we get;

⇒ 24 + 4 × 4 - 64 ÷ 16 = 60

⇒ 24 + 4 × 4 - 4 = 60

⇒ 24 + 16 - 4 = 60

⇒ 40 - 4 = 60

⇒ 36 ≠ 60

⇒ LHS ≠ RHS

Option 3) 32 - 4 ÷ 8 × 64 ÷ 16 = 36 

After interchanging the symbols, we get;

⇒ 32 ÷ 4 - 8 + 64 - 16 = 36

⇒ 8 - 8 + 64 - 16 = 36

⇒ 72 - 8 - 16 = 36

⇒ 48 ≠ 36

⇒ LHS ≠ RHS

Option 4) 48 - 8 + 4 × 64 ÷ 16 = 72

After interchanging the symbols, we get;

⇒ 48 ÷ 8 × 4 + 64 - 16 = 72

⇒ 6 × 4 + 64 - 16 = 72

⇒ 24 + 64 - 16 = 72

⇒ 88 - 16 = 72

⇒ 72 = 72

⇒ LHS = RHS

Hence, the correct answer is "Option 4".