There are plenty of books available in the market on faster calculations but more often than not the authors of such books had not tested the techniques they propound and promote in real life problem solving situations. However, the techniques that you shall find in this book have been tested and used (not only by the author but by countless other people) in examinations time and again.
Many techniques mentioned in other books are pretty impractical and
There are plenty of books available in the market on faster calculations but more often than not the authors of such books had not tested the techniques they propound and promote in real life problem solving situations. However, the techniques that you shall find in this book have been tested and used (not only by the author but by countless other people) in examinations time and again.
Many techniques mentioned in other books are pretty impractical and