this are the navaneet digest of class 11 pcmb which has both the volume 1and 2 which was not used more than one time
..
it contain
1) chemistry volume 1 and 2
2) physics volume 1and 2
3)math volume 1 only
4) biology volume 1 and 2
..

these are the best and will be worth for your child and your money ..😊😊😊