STUDENT

Teacher: 1 Book + 1 Book?
.
.
Papu: 2 Books
.
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Teacher: 2 Books + 2 Books?
.
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Papu: 4 Books
.
.
Teacher: (Hun ik aukha question)!
61,789,365 Books + 23,678,989 Books??
.
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Papu: its LIBRARY mam .
..
Que: kya papu pas ho payega ?