Question

For whom we have to write formal and informal letters pls tell tomorrow is the exam for me

Answer 1

Formal letter is written to people like principal, teacher, mananger, editor, post office, in short to all formal people to whom we have to BEHAVE formally.

Informal letter is written to friends and family only with whom we can BEHAVE informally and they won't mind!

so you can remember INFORMAL=family+friends and FORMAL=all others

Answer 2

We have to write formal letters to authorities, teachers, advocates or anyrespeced persons who are in some sectors. Informal letters are written to Frnds, relatives, parents