SSC GD 2015

Question 29

The value of $$\frac{(75.8)^{2}-(35.8)^{2}}{40}$$ is

Solution

$$\frac{75.8^{2}-35.8^{2}}{40}$$=$$\frac{(75.8+35.8)(75.8-35.8)}{40}$$


=$$\frac{111.6\times40}{40}$$=111.6

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