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  • Brainly User
2016-03-03T14:17:38+05:30

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Numerical very very important even from derivations .....If you are in CBSE 

Optics and Nuclei and 4,5,6,7,8 too 
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2016-03-03T17:44:10+05:30

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Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
1.meditation is necessary.
2. don't forget to practice numericals.
3.A time table is necessary before one month of exams.
4. dont forget to read NCERT books very carefully.
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plz mark as brainliest
plz mark as brainliest