In Mathematics Pdf: An Excursion

It sounds like you're asking about the well-known problem-solving booklet An Excursion in Mathematics by Prof. M. N. Deshpande (often published by the Association of Mathematics Teachers of India).

Yes, it is widely regarded as a for olympiad training and contest preparation, especially for the Indian National Mathematical Olympiad (INMO) and the Regional Mathematical Olympiad (RMO). an excursion in mathematics pdf