Answers

2014-07-27T15:48:17+05:30

we write pin codes on letters to have the right destination of the place
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2014-07-27T15:48:49+05:30
In the country, there may be many places with same names in different states.So,to avoid the confusion,each state is assigned with a pin code.That is the reason why we write pin codes on the letters to avoid confusion
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