Quantitative Aptitude – CRACKER is Taxmann's comprehensive question bank for the September 2026 and January 2027 exams, now in its 17th Edition, authored by Kailash Thakur. It brings together 2,200+ fully solved, memory-based questions spanning attempts from 2015 right up to the May 2026 exam, plus 200+ questions from ICAI's RTPs and MTPs, organised across 28 chapters of Business Mathematics, Logical Reasoning and Statistics. Attempt-wise tags on every question, a nine-exam marks-distribution table and chapter-wise ICAI Study Material mapping double up as a study-planning tool—showing students exactly where the marks lie and which questions repeat. What sets the book apart is its calculator-driven method, with nearly 150 tricks showing exact button sequences and the GBC ('Go by Choices') technique for reverse-solving MCQs at exam speed. Crisp concept recaps and 130+ worked examples in every chapter make revision possible without a separate textbook.