Which two signs should be interchanged to make the given equation correct?
$$3 \div 6 − 2 + 8 \times 4 = 18$$

Option (a) $$\div$$ and −

$$3 − 6 \div 2 + 8 \times 4 = 18$$

$$3 − 3 + 32 = 18$$

$$32\ne18$$

The given interchange of signs is not satisfied the given equation. So this is not the correct answer.

Option (b) + and $$\div$$

$$3 + 6 − 2 \div 8 \times 4 = 18$$

$$3 + 6 − 1 = 18$$

$$8\ne18$$

The given interchange of signs is not satisfied the given equation. So this is not the correct answer.

Option (c) $$\div$$ and $$\times$$

$$3 \times 6 − 2 + 8 \div 4 = 18$$

$$18 − 2 + 2 = 18$$

18 = 18

The given interchange of signs is satisfied the given equation. So this is the correct answer.

Option (d) + and −

$$3 \div 6 + 2 − 8 \times 4 = 18$$

$$0.5 + 2 − 32 = 18$$

$$-29.5\ne\ 18$$

The given interchange of signs is not satisfied the given equation. So this is not the correct answer.