Two mothers and two daughters entered a room. After an hour, three mothers and five daughters............ What happened?

Question

Two mothers and two daughters entered a room.
After an hour, three mothers and five daughters came out of the room.
What happened?

Answer 1

While entering the room:
Grandmother + Mother + Daughter (Pregnant).

Mother => Daughter of Grandmother => No: of Daughters = 1
Daughter => Daughter of Mother => No: of Daughters =2.

Grandmother => Mother of Mother => No: of Mothers = 1
Mother => Mother of Daughter => No: of Mothers = 2.

On exiting:
Grandmother + Mother + Daughter + triplets (all female)

Mother => Daughter of Grandmother => No: of Daughters = 1
Daughter => Daughter of Mother => No: of Daughters = 2
triplets => Daughter of Daughter => No: of Daughters = 2 + 3 = 5.

Grandmother => Mother of Mother => No: of Mothers = 1
Mother => Mother of Daughter => No: of Mothers = 2.

Comments

very good
properly explained