Question 6
Which two signs should be interchanged in the following equation to make it correct?
$$10 + 5 \div 10 \times 8 - 10 = 16$$
Solution
In the given question,
$$10 + 5 \div 10 \times 8 - 10 = 16$$
If we will interchange the + to - and - to +, then
$$\Rightarrow 10 - 5 \div 10 \times 8 + 10 = 16$$
$$\Rightarrow 10 - \dfrac{1}{2} \times 8 + 10 = 16$$
$$\Rightarrow 10 - 4 + 10 = 16$$
$$\Rightarrow 6 + 10 = 16$$
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