Quantitative Aptitude | CRACKER is a comprehensive study companion designed for CA Foundation students preparing for Paper 3. It covers Business Mathematics, Logical Reasoning, and Statistics in a student-friendly format. This Edition is fully updated, featuring previous exam papers (including Sept. 2025 Exam) with solutions, model questions, RTPs/MTPs issued by the ICAI, and an in-depth analysis of chapter-wise marks distribution.

The Present Publication is the 15^th Edition for the Jan./May 2026 Exams. This book is authored by Kailash Thakur, with the following noteworthy features:

• [Extensive Past Exam Coverage] Includes a thorough compilation of questions from previous exams up to the Sept. 2025 attempt
• [Additional Practice] Incorporates extra questions and problem sets likely to appear in upcoming exams
• [RTPs & MTPs Included] Handy solutions and practice from the ICAI’s Revision Test Papers (RTPs) and Mock Test Papers (MTPs)
• [Chapter-wise Marks Distribution] Detailed table showing the frequency and distribution of marks across chapters from various past attempts, helping students prioritise their study plan
• [Mapping with ICAI Study Material] Each chapter corresponds to ICAI study modules, ensuring complete alignment with the ICAI syllabus
• [Calculator & Shortcut Tricks] Time-saving tips and computational shortcuts to help navigate exam problems swiftly
• [Focus on Newly Introduced Topics] Special emphasis on Calculus (Limit & Continuity) and Sampling Theory of Estimation, which are recent additions to the syllabus, ensuring readers stay updated
• [Time-saving Techniques] The inclusion of calculator tips and result-proven shortcuts help optimise exam performance
• [Student-friendly Language] Concepts are explained in an easily digestible manner, making the book accessible even to those with little prior exposure to advanced mathematics or statistics

The coverage of the book is as follows:

• Business Mathematics
  • Ratio & Proportion, Indices, Logarithms, Linear & Quadratic Equations, Inequalities, Mathematics of Finance (Simple Interest, Compound Interest, and Annuity), Permutations & Combinations, Sequences & Series, Sets/Functions/Relations, and newly introduced Calculus (Limit, Continuity, Differential Calculus, Integration)
• Logical Reasoning
  • Number Series, Coding-Decoding, Direction Tests, Seating Arrangements, and Blood Relations
• Statistics
  • Data Description, Central Tendency, Measures of Dispersion, Probability (including Theoretical Distributions), Sampling Theory of Estimation (newly added), Correlation, Regression Analysis, and Index Numbers

The structure of the book is as follows:

• Chapter-wise Segmentation – Each chapter begins with an overview of key concepts
• Progressive Difficulty – Questions move from basic to advanced levels, reinforcing concepts step by step
• Exam-oriented Approach – Past exam questions are marked, and each chapter concludes with targeted practice questions
• Revision-friendly Format – Summaries, formula sheets, and shortcut tips are provided throughout to help with quick revisions
• Additional References
  • Chapter-wise Marks Distribution – Located at the front, guiding strategic exam preparation
  • Comparison with ICAI Study Material – Ensures no overlap or omission of ICAI syllabus content
  • Complete Solved Papers – Dedicated section containing solutions from relevant past examinations.