Good work Mr. Gupta! Your word and work show your passion and honesty towards Mathematics. Really I haven’t met you but I can judge you that you are a great teacher and guide to the students… Keep it up! Hoping to learn a lot from you.

Dear Mr. O.P. Gupta, I wanted to express my heartfelt gratitude to you for your exceptional efforts in creating the CBSE 21 Sample Papers. Your dedication to crafting these invaluable resources has truly made a significant impact on students. The clarity and precision with which you've compiled these sample papers have not only eased exam preparations but have also boosted confidence of students in tackling the challenges of the CBSE exams. Your commitment to providing high-quality study materials is commendable, and it's evident that you have put your heart and soul into this endeavor. I wish to convey my utmost appreciation for your hard work and the positive influence it has had on students across the board. I believe that your sample papers will continue to benefit countless students in the years to come. Thank you for CBSE 21 SAMPLE PAPERS.

Maths was always my weak point. However, after receiving the guidance and support of O.P. Gupta sir, I can say that I’ve pretty much conquered my fear of answering this subject. The “MATHEMATICIA” has excellent question bank and the “MATHMANIA” too, which has primarily the previous board questions, has helped me perform well. Furthermore, Sir was always easily accessible at all times and would readily clear my doubts. Despite staying out of India and receiving such an attention, I feel truly blessed.. May God always bless him for his humble and sincere efforts!

These books are very useful because (a) well explained theoretical portion (b) covers different types of questions (c) students will be aware of different types of questions and this helps them to attend every question in any exam (d) cover basic as well as high level reasoning questions (e) Quality as well as quantity (f) Increases student’s way of attempting a particular question.