The value of $$\frac{1}{7}+\frac{5}{7}+\frac{2}{14}+\frac{4}{7}-2=$$ 

Correct option is B

Given: ​

​$$\frac{1}{7}+\frac{5}{7}+\frac{2}{14}+\frac{4}{7}-2$$ 

Solution: ​

​$$\frac{1}{7}+\frac{5}{7}+\frac{2}{14}+\frac{4}{7}-2 \\ \ \\ = \frac{10}{7} +\frac{2}{14} -2 \\ \ \\ =\frac{20 + 2 - 28}{14} \\ \ \\ = \frac{-6}{14}$$​​