Railways | RRB Ministerial and Isolated Categories
RRB Ministerial and Isolated Categories sets 10 Mathematics questions for 10 marks in the Computer Based Test, so it is worth planning your preparation around the topics below.
The quantitative core of the railway papers: arithmetic, mensuration, and time-speed-distance built on a secondary-school foundation. Fluency with fractions, percentages and ratios underlies almost every question, so that is where practice pays back fastest.
How much Mathematics is worth in each RRB Ministerial and Isolated Categories stage, from the official pattern.
| Stage | Questions | Marks | Time | Share |
|---|---|---|---|---|
| Computer Based Test | 10 | 10 | — | 10% |
Every topic in the official syllabus. The linked ones open a set of solved questions you can practise straight away.
Written to the RRB Ministerial and Isolated Categories pattern, with the answer key and the method behind it — a look at how the section is actually set before you drill the full topic sets.
Quadratic equations · solved example
In each, solve for x and y and give the relation: I. x² − 10x + 21 = 0 II. y² + 2y = 0
Solution
The roots are x = 3, 7 and y = -2, 0. Comparing every x with every y gives "x > y".
Quadratic equations · solved example
In each, solve for x and y and give the relation: I. x² + 11x + 30 = 0 II. y² − 3y − 18 = 0
Solution
The roots are x = -5, -6 and y = -3, 6. Comparing every x with every y gives "x < y".
Average · solved example
Find the average of 10, 20, 30, 40 and 50.
Solution
Sum is 150 and there are 5 numbers, so the average is 150 ÷ 5 = 30.
Average · solved example
Find the average of 16, 20, 24, 28, 32, 36, 40.
Solution
The sum of the 7 numbers is 196, and dividing by 7 gives 28.
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Mathematics shows up in every RRB Ministerial and Isolated Categories mock test, in the same interface, with sectional locking and negative marking.
RRB Ministerial and Isolated Categories: 28-question practice mock
28 questions | 28 min
RRB Ministerial and Isolated Categories Latest notified cycle sets 10 Mathematics questions for 10 marks in the Computer Based Test.
Yes. RRB Ministerial and Isolated Categories deducts one third of a mark for each wrong answer, Mathematics included, so unsure guesses cost you. One third of a mark is deducted for each wrong answer.
The RRB Ministerial and Isolated Categories syllabus lists Number system and simplification, LCM and HCF, Ratio and proportion, Percentage, Average, Profit and loss and more. Weight your revision towards the ones you are weakest on and confirm the emphasis against the paper analysis for recent cycles.
Every Mathematics question on this site is free and written to the exam pattern. Use the topic drills for instant-feedback practice, the daily quiz to keep the section warm, and the RRB Ministerial and Isolated Categories mock tests to sit it under a real clock with negative marking.