1. Sanskrit:
* Ek (One):
* Singular:
* Nominative: Ek
* Accusative: Ekam
* Instrumental: Ekēna
* Dative: Ekāya
* Ablative: Ekāt
* Genitive: Ekasya
* Locative: Eke
* Dual:
* Nominative: Dvau
* Accusative: Dvau
* Instrumental: Dvayor
* Dative: Dvayobhyām
* Ablative: Dvayobhyām
* Genitive: Dvayoh
* Locative: Dvayoh
* Plural:
* Nominative: Eka
* Accusative: Ekan
* Instrumental: Ekaih
* Dative: Ekābhyām
* Ablative: Ekābhyām
* Genitive: Ekānām
* Locative: Ekasu
* Dway (Two):
* Singular: Not Applicable (This word is already in its dual form)
* Dual:
* Nominative: Dvau
* Accusative: Dvau
* Instrumental: Dvayor
* Dative: Dvayobhyām
* Ablative: Dvayobhyām
* Genitive: Dvayoh
* Locative: Dvayoh
* Plural:
* Nominative: Dve
* Accusative: Dve
* Instrumental: Dbhyām
* Dative: Dbhyām
* Ablative: Dbhyām
* Genitive: Dvoh
* Locative: Dvoh
* Tri (Three):
* Singular: Not Applicable (This word is already in its plural form)
* Dual:
* Nominative: Trayau
* Accusative: Trayau
* Instrumental: Trayor
* Dative: Trayobhyām
* Ablative: Trayobhyām
* Genitive: Trayoh
* Locative: Trayoh
* Plural:
* Nominative: Traya
* Accusative: Trayan
* Instrumental: Trayaih
* Dative: Trayābhyām
* Ablative: Trayābhyām
* Genitive: Trayānām
* Locative: Trayasu
* Chatur (Four):
* Singular: Not Applicable (This word is already in its plural form)
* Dual:
* Nominative: Chatvarau
* Accusative: Chatvarau
* Instrumental: Chatvor
* Dative: Chatvobhyām
* Ablative: Chatvobhyām
* Genitive: Chatvor
* Locative: Chatvor
* Plural:
* Nominative: Chatvara
* Accusative: Chatvārān
* Instrumental: Chatvārāiḥ
* Dative: Chatvārābhyām
* Ablative: Chatvārābhyām
* Genitive: Chatvārānām
* Locative: Chatvārāsu
2. Hindi:
* Ek (One):
* Singular: Ek
* Dual: Not used in Hindi.
* Plural: Ek
* Do (Two):
* Singular: Not used in Hindi.
* Dual: Do
* Plural: Do
* Teen (Three):
* Singular: Not used in Hindi.
* Dual: Not used in Hindi.
* Plural: Teen
* Chaar (Four):
* Singular: Not used in Hindi.
* Dual: Not used in Hindi.
* Plural: Chaar
3. English:
English doesn't have declensions (Shabd Roop) in the same way that Sanskrit or Hindi do. These numbers remain consistent regardless of their grammatical role in a sentence.
Let me know if you have any other questions!