Question 35

By interchanging which two signs the equation will be correct?
$$9 \times 11 \div 31 + 62 - 13 = 18$$

Solution

Option (a)Ā $$\times\ and\ \div$$

$$9 \divĀ 11Ā \times 31 + 62 - 13 = 18$$

The given equation is not satisfied. Because it will give the values in fraction which is not possible.Ā 

Option (b)Ā $$-\ and\ \times$$

$$9 - 11 \div 31 + 62 \times 13 = 18$$

The given equation is not satisfied. Because it will give the values in fraction which is not possible.

Option (c)Ā $$\div\ and\ +$$

$$9 \times 11 + 31 \div 62 - 13 = 18$$

The given equation is not satisfied. Because it will give the values in decimal which is not possible.

Option (d)Ā $$+\ and\ \times$$

$$9 + 11 \div 31 \times 62 - 13 = 18$$

$$9+\frac{11}{31}\times62-13=18$$

$$9+11\times2-13=18$$

$$9+22-13=18$$

18=18

The given equation is satisfied. So this is the correct answer.


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