Dr. R.S. Aggarwal is one of India’s most renowned authors for competitive exam preparation. With decades of experience, he has guided millions of aspirants preparing for SSC, Banking, Railways, UPSC, Defence, and other government or entrance exams. Known for his clear explanations, structured approach, and extensive practice material, Dr. Aggarwal’s books help students build strong reasoning, aptitude, and problem-solving skills. Trusted by learners across India, his works continue to set the benchmark in exam preparation books, making him a reliable mentor for success in highly competitive environments.