Question 37

Which two signs need to be interchanged to make the following equation correct?
$$2 + 78 \div 13 − 4 \times 111 = 119$$

Solution

The given series $$2\ +\ \frac{78}{13}-4\times\ 111=119$$

A. $$+\ and\ \ \frac{\ }{ }$$

$$\frac{2}{78}+13-4\times\ 111=119$$

$$0.0256+13-4\times\ 111=119$$

$$13.0256-4\times\ 111=119$$

$$13.0256-444=119$$

$$-430.9744=119$$

B.$$\ \ \frac{\ }{ }and\ \times\ $$

$$2\ +\ 78\times\ 13\ -\ \frac{4}{111}=119$$

$$80\times\ 13\ -\ \frac{4}{111}=119$$

$$1040-\frac{4}{111}=119$$

$$\frac{1036}{111}=119$$

$$9.333=119$$

C.$$+\ and\ -$$

$$2\ -\ \frac{78}{13}+4\times\ 111=119$$

$$2-6+4\times\ 111=119$$

$$2-6+444=119$$

$$2-450=119$$

$$-448=119$$

D.$$\ +\ and\ \times\ $$

$$2\times\ \frac{78}{13}\ -\ 4+111=119$$

$$2\times\ 6\ -\ 4\ +\ 111=119$$

$$12-\ 4\ +\ 111=119$$

$$8+\ 111=119$$

$$119=119$$

Hence option D is the correct answer


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