Decoding the PINCODE (Postal Index Number) - Factly

Postal Index Number consists of six digits. The first three digits are 6, 3, and 1. Make the largest and the smallest Postal Index Number by using the digits 0, 3 and 6, each only once. - Mathematics | Shaalaa.com

Postal Index Number: 6 अंकों का ही क्यों होता है पिन कोड, जानिए वजह | Zee Business

Decoding the PINCODE (Postal Index Number)

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