hello aspirants,

RS aggrawal book is not enough to crack the JCECE (Jharkhand Combined Entrance Competitive Examination) exam because 

JCECE course offered:

It is conducted for three different groups i.e. PCM for engineering, PCB for Veterinary courses, and PCMB for both engineering and medical groups.

1.PCM GROUP

The candidates who have qualified or are appearing for class 12th or its equivalent with Physics, Chemistry, and Mathematics, and want to appear for JCECE 2019 with Physics, Chemistry and Mathematics will fall under PCM Group.

2.PCB GROUP

The candidates who have qualified or are appearing for class 12th or its equivalent with Physics, Chemistry, and Biology, and want to appear for JCECE 2019 with Physics, Chemistry and Biology will fall under PCB Group.

3.PCMB GROUP

The candidates who have qualified or are appearing for class 12th or its equivalent with Physics, Chemistry and Biology as well as Mathematics as an extra subject, and want to appear for JCECE 2019 with Physics, Chemistry, Mathematics, and Biology will fall under PCMB Group.

So, if you want to crack JCECE exam then you have to study of  Physics, Chemistry, and Mathematics, not only the mathematics by the RS AGGRAWAL book.

hope it will help you.