Taxmann Cracker - Quantitative Aptitude (Maths, LR & Stats) Book For CA Foundation By Kailash Thakur.

Edition : 17th (2026)

Quantitative Aptitude – CRACKER (Previous Exam Solved Papers) CA Foundation | Paper 3 is a comprehensive question bank prepared in conformity with the latest syllabus and applicable for the September 2026 and January 2027 exams. The book compiles 2,200+ fully solved, memory-based questions from past examinations—covering over a decade of attempts, comprehensively from 2015 onwards and updated up to and including the May 2026 exam—along with selected questions from ICAI's Revision Test Papers (RTPs) and Mock Test Papers (MTPs), arranged chapter-wise across the paper's three components, i.e., Business Mathematics, Logical Reasoning and Statistics. It is built around the author's signature calculator-driven solving approach, in which solutions include actual button-press sequences and reverse-solving techniques suited to the speed demands of an objective-type paper.

The Present Publication is the 17^th Edition, authored by Kailash Thakur, with the following noteworthy features:

• [Attempt-wise Tagging] Every past exam question carries its source tag, and questions repeated across attempts and ICAI test papers carry dual tags (e.g., [May 2026] [RTP May 2026]), revealing recurrence patterns at a glance
• [Selected RTPs & MTPs] 200+ questions sourced from ICAI's Revision Test Papers and Mock Test Papers, including recent cycles such as RTP May 2026 and MTP Jan. 2026
• [Additional Questions in Selected Chapters] Dedicated 'Model Exam Questions (for Practice)' banks with answer keys—49 MCQs in Calculus (Limit & Continuity) and 160 MCQs in Sampling Theory of Estimation—supplementing the two newly introduced chapters where the pool of past exam questions is otherwise thin
• [Chapter-wise Marks Distribution] An attempt-wise analysis of marks allotted to each of the 28 chapters across nine past exams (June 2023 – May 2026), with per-chapter averages that make the 40:20:40 sectional weightage and high-yield chapters visible at a glance
• [Chapter-wise ICAI Mapping] A ready comparison table mapping all 28 chapters of the book to the corresponding chapters of the ICAI Study Material
• [Calculator & Shortcut Tricks] Nearly 150 calculator-trick blocks showing the exact button sequence—concentrated where computation is heaviest, viz., Compound Interest, Annuity and Central Tendency—alongside the author's GBC ('Go by Choices') technique for reverse-solving MCQs from the options
• [Concise Concept Recap with Examples] Each chapter opens with crisp theory, formulas, remarks, and 130+ worked examples across the book, allowing quick revision without a separate textbook

The book spans 28 chapters organised under the three components of Paper 3, with the largest question banks concentrated in the highest-weightage chapters:

• Business Mathematics — Chapters 1–15 | 394 Pages
• Ratio & Proportion | Indices | Logarithm | Linear Equation | Quadratic Equation | Inequalities | Mathematics of Finance – Simple Interest, Compound Interest & Annuity | Permutations and Combinations | Sequence & Series | Sets, Function & Relation | Calculus (Limit & Continuity) | Differential Calculus | Integration
• Logical Reasoning — Chapters 16–19 | 168 Pages
• Number Series, Coding & Decoding | Direction Tests | Seating Arrangement | Blood Relations
• Statistics — Chapters 20–28 | 285 Pages
• Description of Data | Central Tendency | Measures of Dispersion | Probability | Probability (Theoretical) Distribution | Sampling Theory of Estimation | Correlation | Regression Analysis | Index Numbers

The structure of the book is as follows:

• Opening Reference Tables — The book opens with two reference tables—the chapter-wise marks distribution of nine past attempts and the chapter-wise comparison with the ICAI Study Material—that together work as a study-planning dashboard
• Uniform Chapter Anatomy — Every chapter follows a consistent flow—a concise concept and formula recap with worked examples, followed by a dedicated section of memory-based past exam questions with solutions, presented in the MCQ format of the actual paper
• Inline Solutions — Solutions appear directly below each question, so practice and verification happen on the same page without flipping to a separate answers section
• Practice Banks in New Chapters — In the two newly added syllabus chapters, a 'Model Exam Questions (for Practice)' bank with consolidated answer keys follows the solved section for additional drilling