Railgarion ki Devi, Nanda Devi AC ko pranaam - Sunaina Malhotra

Indian Railway 5-Digit Train Numbering Scheme
Second Digit: Train Type is Super-Fast(Regard-less of zones, Super-Fast including Duronto, Shatabdi, Rajdhani, Jan Shatabdi, Sampark Kranti, Garib Rath, Yuva, Double Decker trains also) if the second digit is 2 else it will refer to the zone of the rake.
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Third Digit: It refers to the zone and the primary maintenance Division of the rake if the...
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second digit is 2 else it will refer to the primary maintenance Division of the rake only if second digit is not 2. If, 3rd Digit is ‘0’, it means that the particular rake is maintained by the zonal Head-Quarter of the zone.
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Fourth and Fifth Digit: Serial Number.
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Courtesy: IRFCA & Various Railway Sites.