There are two numbers. If there is one object, its noun/pronoun form is singular. The plural form of a noun/pronoun indicates that there is more than one object.
Rules for forming the plural are as follows:


Masculine Nouns: आ-ending masculine nouns change to ए.

कमरा - कमरे
kamraa - kamre
बेटा - बेटे
beTaa - beTe
चश्मा - चश्मे 
chashmaa - chashme

Exceptions: आ-ending masculine nouns of kinship terms and words of Sanskrit origin such as चाचा ‘father’s younger brother’, दादा ‘paternal grandfather’, मामा ‘mother’s brother’, पिता ‘father’, राजा ‘king’, etc. do not change to ए.

  1. Consonant- ending masculine nouns do not change.
    मकान - मकान
    makaan - makaan
    हाथ - हाथ
    haath - haath
    नाम - नाम
    naam - naam

  3. Feminine Nouns: याँ is attached to इ or  ई -ending feminine nouns (ई first changes to इ before याँ is attached.)
    लड़की - लड़कियाँ
    laRkii -laRkiyaaN
    बेटी - बेटियाँ
    beTii - beTiyaaN
    तिथि - तिथियाँ 
    tithi - tithiyaaN

    For all other ending feminine nouns, एँ is attached.
    बहन - बहनें
    behen - behneN
    मेज़ - मेज़ें
    mez - mezeN
    दीवार - दीवारें
    diivaar - diivaareN
    भाषा - भाषाएँ
    bhaashaa - bhaashaaeN
    माता - माताएँ
    maataa - maataaeN
    बहू - बहुएँ
    bahuu - bahueN

Practice Exercise 1

Practice Exercise 2