1. Official Career Websites & Portals Primary Indian Railways Portal: https://indianrailways.gov.in RRB Chandigarh (Centralized Notifications): https://www.rrbcdg.gov.in Railway Protection Force (RPF Portal): https://rpf.indianrailways.gov.in 2. Recommended Study References & Books (3-4 Core Books) Quantitative Aptitude: Quantitative Aptitude for Competitive Examinations by R.S. Aggarwal (S. Chand Publishing) — Essential for mastering arithmetic, algebra, and data interpretation for RRB […]