5 Books:
mathematics part 1
mathematics part 2
science part 1
science part 2
social science

Each book has:
1. Theory for concept understanding

2. Solved examples after each topic for better understanding

3. Practice exercise after every topic

4. Quick recap and summary and formula recap after each chapter

5. 2 Levels with easy to hard level of questions on the basis of CBSE and olympiads preparation

7. Answer key for all questions including exercises and both levels.

Feel free to comment for more details.

I have more such material posted on my profile, you can purchase in combos and get discounts as well.