Ganit Pariksha 20-20 (गणित परीक्षा 20-20), written by Dr Rajeev 'Lekhak' and published by Disha under its Gyan Sangrah Series, covers mathematics for competitive examinations. The complete book is written in Hindi (Devanagari script), so aspirants preparing in the Hindi medium can study the subject in their own language. This is the 5th Edition. The book gives Basic and Tricky explanatory solutions to RPSC and RSSB examination questions from 2009 to June 2025 (RPSC, RSSB परीक्षा (2009-जून, 2025) प्रश्नोत्तर का Basic & Tricky व्याख्यात्मक हल). Two solutions to the same question is the useful part. The basic method shows why the answer is what it is, which a candidate needs in order to handle a variation; the tricky method shows how to reach it inside the time the paper allows. Working both across sixteen years of actual questions is what turns understanding into speed. It is prepared for VDO, CET, REET, LDC, Patwari, Computer Anudeshak, RAS, PSI, Junior Accountant and Grade I, II and III Teacher examinations. Key Features: Written entirely in Hindi (Hindi medium) for competitive examination aspirants Complete mathematics in one volume 5th Edition Basic and Tricky explanatory solutions to every question RPSC and RSSB questions from 2009 to June 2025 For VDO, CET, REET and LDC examinations For Patwari, Computer Anudeshak and Junior Accountant examinations For RAS, PSI and Grade I, II and III Teacher examinations Fast Track of Success approach By Dr Rajeev 'Lekhak', from the Disha Gyan Sangrah Series यह पुस्तक "गणित परीक्षा 20-20" डॉ. राजीव 'लेखक' द्वारा लिखित है तथा दिशा (ज्ञान संग्रह सीरीज़) द्वारा प्रकाशित है। यह पूर्णतः हिंदी भाषा (Hindi medium) में है। यह 5वाँ संस्करण है। इसमें RPSC एवं RSSB परीक्षा (2009 से जून, 2025) के प्रश्नोत्तर का Basic & Tricky व्याख्यात्मक हल दिया गया है। यह VDO, CET, REET, LDC, पटवारी, कम्प्यूटर अनुदेशक, RAS, PSI, कनिष्ठ लेखाकार तथा I, II व III ग्रेड शिक्षक परीक्षाओं के अभ्यर्थियों के लिए अत्यंत उपयोगी है।