The value of $$\frac{1}{4}+\frac{1}{4\times 5}+\frac{1}{4\times 5 \times 6} ,$$​ correct to four decimal places, is:

Correct option is B

Given: 

​$$\frac{1}{4}+\frac{1}{4\times 5}+\frac{1}{4\times 5 \times 6}$$ 

Solution: 

​$$=\frac{1}{4}+\frac{1}{4\times 5}+\frac{1}{4\times 5 \times 6} \\ \ \\ =\frac{1}{4}+\frac{1}{20}+\frac{1}{120 } \\ \ \\ =\frac{30+6+1}{120}\\ \ \\= \frac{37}{120} \\ \ \\ = 0.3083$$​​