Which fraction in simplest form is equivalent to 0.4

Question

anonymous · Answer

How many digits are there after decimal in $0.4$ ??

anonymous · Answer

@yungtunechi I think I am asking something to you..

You must interact if you want to learn..

anonymous · Answer

After decimal point, is there one digit, two digits or how many digits you are seeing??

Say for example:

In $0.56$
After decimal point, there are two digits that are $5$ and $6$..

Can you tell me how many digits are there after decimal in $0.4$??

anonymous · Answer

@yungtunechi why are you not replying??

Any special reason??

Oh sorry how can I know Special reason if you are not replying..