The correct expression of $$6.\overline {46}\,$$ in the fractional form is:

A. $$\frac{{646}}{{99}}$$

B. $$\frac{{64640}}{{1000}}$$

C. $$\frac{{640}}{{100}}$$

D. $$\frac{{640}}{{99}}$$

Answer: Option D

Solution(By Examveda Team)

$$\eqalign{ & 6.\overline {46} \cr & = 6 + 0.\overline {46} \cr & = 6 + \frac{{46}}{{99}} \cr & = \frac{{594 + 46}}{{99}} \cr & = \frac{{640}}{{99}} \cr} $$