NCERT-Class 6th-Mathematics (Hindi medium)
NCERT-Class 6th-Mathematics (English Medium)
NCERT-Class 7th-Mathematics (Hindi medium)
NCERT-Class 7th-Mathematics (English Medium)
NCERT-Class 8th-Mathematics (Hindi medium)
NCERT-Class 8th-Mathematics (English Medium)
NCERT-Class 9th-Mathematics (Hindi medium)
NCERT-Class 9th-Mathematics (English Medium)
NCERT-Class 10-Mathematics (Hindi medium)
NCERT-Class 10-Mathematics (English Medium)
NCERT-Class-11-English-Part-3
NCERT-Class-12-English-Part-1
Chapter- 4.2