Question 30
Which two signs need to be interchanged to make the following equation correct?
$$14 \times 16 \div 8 + 2 - 1 = 17$$
Solution
$$ 14 + 16 \div 8 \times 2 - 1 = 17 $$
$$ 14 + 2 \times 2 - 1 = 17 $$
$$ 18 - 1 = 17 $$
By options (a) and (c), we will get 3 digit number which is not possible.
By option (d), we will get 14 which will not satisfy the given euqation.
Hence option (b) is the correct answer.
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