BCS Written Math & Mental Ability case studies

The BCS Written Math & Mental Ability component is the quantitative and reasoning portion of Bangladesh's Bangladesh Civil Service (BCS) examination, the competitive recruitment process for cadre and non-cadre government posts. It is intended for graduates preparing for public-service careers, and it rewards candidates who can compute quickly and accurately under pressure as much as those who know advanced mathematics. The syllabus spans school-level arithmetic - number systems, HCF and LCM, fractions and decimals - through percentage, profit and loss, ratio and partnership, time and work, speed and distance, averages and mixtures, simple and compound interest, algebra, and geometry and mensuration. A separate mental ability strand tests series completion, coding-decoding, analogies, and odd-one-out reasoning, which many candidates find the most trainable section. Topics on this exam: Arithmetic (Number Systems, HCF/LCM, Fractions, Decimals), Percentage, Profit and Loss, Discount, Ratio, Proportion and Partnership, Time, Work and Pipes/Cisterns, Speed, Time, Distance and Trains, Average, Mixture and Alligation, Interest (Simple and Compound), Algebra (Equations, Inequalities, Sequences), Geometry and Mensuration, and Mental Ability (Series, Coding-Decoding, Analogy, Odd One Out). The BCS Written Math & Mental Ability case studies are 5 cases and about 2,500 words.