Home/Blog/CA Foundation Paper 3 Strategy: How to Split Maths, LR & Stats

CA Foundation Paper 3 Strategy: How to Split Maths, LR & Stats

25 April 2026·7 min·By CA Saarthi Team

CA Foundation Paper 3Business Maths strategyLogical Reasoning CA

In short

Paper 3 is technically three subjects in one. The students who struggle most are the ones who treat all three the same way.

Practice questions on Absolute Value

# CA Foundation Paper 3 Strategy

Paper 3 is officially Business Mathematics, Logical Reasoning and Statistics — three subjects, one paper, 100 marks. The mistake most students make is treating it as one subject.

The split (recent attempts, indicative)

| Section | Weight | Question type |

|---|---|---|

| Business Mathematics | 40% | Numerical, formula-driven |

| Logical Reasoning | 20% | Pattern-based, no formula |

| Statistics | 40% | Numerical, formula-driven |

What each section actually rewards

Business Maths — formulas + speed

Ratio, proportion, indices, logarithms.

Time value of money: SI, CI, PV, FV, annuities, EMI.

Permutations, combinations, sequences, series.

**Strategy:** memorise the 20 core formulas. Drill 50 problems per topic.

Logical Reasoning — practice over theory

Coding-decoding, blood relations, direction sense, syllogisms, seating arrangements, number/letter series.

**No formulas.** Pure pattern recognition + careful reading.

**Strategy:** solve 10 questions a day for 30 days. By day 30, your brain pattern-matches automatically.

Statistics — formulas + interpretation

Central tendency (mean / median / mode), dispersion (range / SD / CV), correlation, regression, index numbers, time series.

**Strategy:** master the formula sheet. Then drill 30 questions per chapter to build speed.

Time allocation for prep (3 months)

Weeks 1–4: Business Maths foundations (ratio, indices, log, SI/CI).

Weeks 5–8: Time value of money + permutations/combinations + sequences.

Weeks 9–10: Logical Reasoning daily drills.

Weeks 11–12: Full Statistics + revision.

During the exam (2-hour paper)

The paper is 2 hours, 100 MCQs. Average ~72 seconds per MCQ.

**First sweep (60 min):** answer everything you're sure of. Skip anything that takes >90 seconds.

**Second sweep (40 min):** tackle skipped questions. Eliminate options before guessing.

**Last 20 min:** OMR verification + last attempts.

Common pitfalls

**Spending 5 minutes on one LR puzzle.** No question is worth 5 minutes in a 72-second-budget paper. Skip and return.

**Memorising LR "shortcuts" you don't fully understand.** Shortcuts only work when you know why they work.

**Ignoring negative marking.** Paper 3 has 0.25 negative marking — guess only when you've eliminated 2+ options.

Paper 3 has the highest score-distribution variance of all four papers. Plan it well and 80+ is reachable. Plan it badly and you'll struggle to clear 40.

🎨

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Home/Blog/CA Foundation Paper 3 Strategy: How to Split Maths, LR & Stats

CA Foundation Paper 3 Strategy: How to Split Maths, LR & Stats

25 April 2026·7 min·By CA Saarthi Team

CA Foundation Paper 3Business Maths strategyLogical Reasoning CA

In short

Paper 3 is technically three subjects in one. The students who struggle most are the ones who treat all three the same way.

Practice questions on Absolute Value

# CA Foundation Paper 3 Strategy

Paper 3 is officially Business Mathematics, Logical Reasoning and Statistics — three subjects, one paper, 100 marks. The mistake most students make is treating it as one subject.

The split (recent attempts, indicative)

| Section | Weight | Question type |

|---|---|---|

| Business Mathematics | 40% | Numerical, formula-driven |

| Logical Reasoning | 20% | Pattern-based, no formula |

| Statistics | 40% | Numerical, formula-driven |

What each section actually rewards

Business Maths — formulas + speed

Ratio, proportion, indices, logarithms.

Time value of money: SI, CI, PV, FV, annuities, EMI.

Permutations, combinations, sequences, series.

**Strategy:** memorise the 20 core formulas. Drill 50 problems per topic.

Logical Reasoning — practice over theory

Coding-decoding, blood relations, direction sense, syllogisms, seating arrangements, number/letter series.

**No formulas.** Pure pattern recognition + careful reading.

**Strategy:** solve 10 questions a day for 30 days. By day 30, your brain pattern-matches automatically.

Statistics — formulas + interpretation

Central tendency (mean / median / mode), dispersion (range / SD / CV), correlation, regression, index numbers, time series.

**Strategy:** master the formula sheet. Then drill 30 questions per chapter to build speed.

Time allocation for prep (3 months)

Weeks 1–4: Business Maths foundations (ratio, indices, log, SI/CI).

Weeks 5–8: Time value of money + permutations/combinations + sequences.

Weeks 9–10: Logical Reasoning daily drills.

Weeks 11–12: Full Statistics + revision.

During the exam (2-hour paper)

The paper is 2 hours, 100 MCQs. Average ~72 seconds per MCQ.

**First sweep (60 min):** answer everything you're sure of. Skip anything that takes >90 seconds.

**Second sweep (40 min):** tackle skipped questions. Eliminate options before guessing.

**Last 20 min:** OMR verification + last attempts.

Common pitfalls

**Spending 5 minutes on one LR puzzle.** No question is worth 5 minutes in a 72-second-budget paper. Skip and return.

**Memorising LR "shortcuts" you don't fully understand.** Shortcuts only work when you know why they work.

**Ignoring negative marking.** Paper 3 has 0.25 negative marking — guess only when you've eliminated 2+ options.

Paper 3 has the highest score-distribution variance of all four papers. Plan it well and 80+ is reachable. Plan it badly and you'll struggle to clear 40.

🎨