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SSC & Railways

Mathematics for RRB NTPC

Arithmetic from the number system, percentages and ratios to interest, time and work, trains, boats and mixtures, plus algebra, geometry, mensuration, trigonometry and data interpretation. It is 30 questions in CBT 1 and 35 in CBT 2.

6 guides·Conducted by Railway Recruitment BoardsOfficial website

Study in this order

  1. 1A maths plan for RRB NTPC: topics, methods and practiceMathematics is 30 questions in CBT 1 and 35 in CBT 2, and it takes the most time. Most questions are school-level arithmetic, solved fast by candidates who know a few methods well. Topic priority, a six-week order, a daily routine, six time-saving methods with the reason each works, worked questions and a practice set. 7 min read
  2. 2Number system for RRB NTPC: rules, shortcuts and practiceUnit digits, divisibility, remainders, factors and recurring decimals. The number system gives RRB NTPC candidates quick marks once the rules are clear. Each rule with the reason it works, six worked examples and a practice set with answers. 7 min read
  3. 3LCM and HCF for RRB NTPC: methods, patterns and practiceWhen will three bells ring together again? What is the largest number that divides three numbers leaving the same remainder? LCM and HCF questions follow a handful of fixed patterns. Each method with the reason it works, six worked questions and a practice set with answers. 7 min read
  4. 4Simplification for RRB NTPC: BODMAS, approximation and fast calculationSimplification questions look easy, and that is why candidates lose marks on them. One step in the wrong order gives a wrong answer that is always waiting among the options. BODMAS with the reasons behind it, approximation, roots and identities, six worked questions and a practice set. 6 min read
  5. 5Percentage for RRB NTPC: methods, shortcuts and practicePercentage sits under profit and loss, interest, data interpretation and more, so it is the chapter to master first. Successive change, "more than and less than", price and consumption, population, marks and elections, each with the reason it works, six worked questions and practice. 6 min read
  6. 6Ratio and proportion for RRB NTPC: methods, patterns and practiceSharing money, combining two ratios, incomes and savings, coins in a bag, and "if 6 is added to each number" problems. Ratio questions in RRB NTPC follow a few clear patterns once you think in parts. Each method with the reason it works, six worked questions and practice. 7 min read

New Mathematics guides are added regularly. Back to all RRB NTPC guides