1

D

From the fourth option, we get:(8 – 8) + 8 × 32 = 64

⇒ (8 + 8) ÷ 8 × 32 = 64

⇒ 16 ÷ 8 × 32 = 64

⇒ 2 × 32 = 64

Hence, the option D is correct.\

2

D

From the option fourth, we get64 – 8 × 9 ÷ 8 = 64

Putting (– & ÷) in the equation,

⇒ 64 ÷ 8 × 9 – 8 = 64

⇒ 8 × 9 – 8 = 64

⇒ 72 – 8 = 64

⇒ 64 = 64

Hence, the option D is correct.

3

2. 15 × 5 + 2 – 6 ÷ 3 = 56.5

3. 15 + 5 – 2 ÷ 6 × 3 = 3

4. 15 – 5 + 2 × 6 ÷ 3 = 41

A

From the third equation, we get15 + 5 – 2 ÷ 6 × 3 = 3

After interchanging the symbol

⇒ 15 ÷ 5 × 2 – 6 + 3 = 3

⇒ 3 × 2 – 6 + 3 = 3

⇒ 6 – 6 + 3 = 3

⇒ 3 = 3

Hence, the option A is correct.