1. Patel sneha
    7 years & 1 month ago

    Very nice for quick study for exams with lots of examples

    Reply
  2. Chandana-Sri Lanka
    7 years & 2 months ago

    It is very useful and easy to understand.Examples are very good too.
    Tks

    Reply
  3. Noela
    8 years & 3 months ago

    I found it very useful thank you

    Reply
  4. Geofrey kivamba
    8 years & 4 months ago

    Excelent presentation.

    Reply
  5. Ankita
    11 years & 6 months ago

    a very good presentation of the answer with useful information and sound examples. thanks a ton.. it was of great help:)

    Reply