If you decide to purchase a digital copy from a third-party seller, use these five checkpoints to ensure you aren't getting a counterfeit PDF.
: Historical or fundamental math texts by Trailakya Nath Dey (related early editions) are sometimes archived on the Internet Archive Core Topics Covered s n dey math book pdf exclusive
The latest edition (specifically for the new WBCHSE syllabus post-2020) includes new MCQs and case-study based questions. If the PDF claims to be "exclusive" but still shows the old 2014 syllabus, run away. If you decide to purchase a digital copy
The mathematics textbook by Sourendra Nath Dey (S.N. Dey) , published by Chhaya Prakashani published by Chhaya Prakashani