Mathematics and IQ (mental ability) for Lok Sewa: number series, letter series, coding and decoding, percentages, ratio, profit and loss, time and work, averages, simple and compound interest, and reasoning puzzles. Each lesson explains the method step by step with worked examples, then gives practice questions with answers. Speed matters in the IQ section, so learn the method first, then practise with timed quizzes.
🎯 Practise Maths Quiz →
Kharidar Paper I BOST: verification test (spot errors and differences) and filing aptitude test (alphabetical, numerical, chronological filing), with solved examples and a quiz.
Mensuration for Lok Sewa: area and perimeter formulas, Pythagoras, volume and surface area of solids, unit conversions and Nepali land units, with a quiz.
Non-verbal reasoning for Lok Sewa: figure series, mirror and water images, mirror clocks, paper folding, counting triangles and dice, with a quiz.
Direction sense and ranking for Lok Sewa: eight directions, left and right turns, distance, shadow questions, rank formulas and interchange, with a quiz.
Blood relation reasoning for Lok Sewa: English and Nepali relation terms, generation method, family tree, pointing and coded relations, with a quiz.
Analogy and odd-one-out questions for Lok Sewa mental ability: relationship types, number and letter analogies, classification rules and traps, with a quiz.
Average and problems on ages are two of the easiest scoring topics in the Lok Sewa Maths and IQ (aptitude) section. Most questions can be solved in under a minute if you know the basic formula, a few shortcuts and the trick of working with totals. This note gives the formulas, the standard question types and fully worked examples for each.
Time, speed and distance questions appear regularly in the Lok Sewa aptitude (Maths and IQ) paper, including problems on trains and on boats and streams. They all come from one simple formula, Distance = Speed × Time. This note explains unit conversion, average speed, relative speed, trains, boats and streams and a few useful shortcuts, each with a worked example.
Exam notes on ratio and proportion: simplest form, comparing ratios, dividing a sum, compound ratio, means and extremes, proportionals, direct and inverse proportion, ages and mixtures, with a full quiz.
Exam notes on time and work: the one-day work method, working together, the LCM total-work method, efficiency, wages, men-days with hours, and pipes and cisterns, with a full quiz at the end.
