Question

Is It Necessary To put comma(,) in letter. If Yes Then Where is it necessary in both the letters. [While Answering Keep in Mind I m Talking To regards with X th std ICSE BOARDS EXAMINATION]. Plz Provide perfect and correct answers as i m going to appear for boards very soon. Plz Provide justification if u can. THANKX IN ADVANCE!!!!!

Answer 1

in ur address all the three lines should have comma
in formal in the subject there should be a full stop 
yours faithfully and yours affectionately and comma
your name and full stop

Answer 2

You need to put a comma three times in any kind of letter.
1. In between the date, For example:- 23rd january,2013
2. After the salutation. For example:- Dear Priya,
3. At the end. For example:- Your most obedient student,
                                                  Shreya Dash