Asked by bhanu24 | 19th Aug, 2009, 09:45: PM

Expert Answer:

There are many good refreshers available. Use any one for adding on to your knowledge, better diagrams, more examples, simpler explanations etc. But remember that the main book used should be NCERT book.

Answered by  | 22nd Aug, 2009, 11:25: AM

Queries asked on Sunday & after 7pm from Monday to Saturday will be answered after 12pm the next working day.