Ordinal Numbers क्रमसूचक संख्याएँ

The ordinal numbers are called kram-soochak sankhyaaen (क्रमसूचक संख्याएँ) in Hindi

First - Pratham* (प्रथम) / Pahli (पहली) / Pahla (पहला)
Second - द्वितीय* (Dwiteeya)  / दूसरी (Doosri) / दूसरा (Doosra)

Third - तृतीय* (Triteeya) / Teesri (तीसरी) / Teesra (तीसरा)

Fourth - चतुर्थ* (Chaturth) / चौथी (Chauthi) / चौथा (Chautha)
Fifth - पाँचवीं (Paanchveen) / पाँचवाँ (Paanchvaan)
Sixth - छठी (Chhathi) / छठा (Chhatha)

All ordinal numbers after sixth follow same rule. These can be derived by suffixing vaan or veen, that is:
ordinal number = cardinal number + vaan*** (for addressing masculine gender)

Example (उदाहरण):

• This is my tenth book
• yeh mery dasaveen pustak hai
• यह मेरी दसवीं पुस्तक है

ordinal number = cardinal number + veen** (for addressing feminine gender)
Example (उदाहरण):

• This is my ninth toy
• yeh mera navaan khilauna hai
• यह मेरा नौवाँ खिलौना है

Seventh - सातवीं** (Saatveen) / सातवाँ*** (Saatvaan)
Eighth - आठवीं** (Aathveen)/आठवाँ*** (Aathvaan)
Ninth - नवीं** (Naveen)/ नौवीं** (Nauveen)/ नौवाँ*** (Navaan) / नवाँ*** (Nauvaan)
Tenth - दसवीं** (Dasveen)/ दसवाँ*** (Dasvaan)
Twentieth - बीसवीं** (Beesveen)/ बीसवाँ*** (Beesvaan)
Fiftieth - पचासवीं** (Pachaasveen)/ पचासवाँ*** (Pachaasvaan)
Hundredth - सौवीं** (Sauveen)/ सौवाँ*** (Sauvaan)
Thousandth - हज़ारवीं** (Hazarveen)/ हज़ारवाँ*** (Hazarvaan)

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* Gender neutral, ** Feminine, *** Masculine