Chapter 7 of 10
Important Topics
Logical Deduction — Important Topics
BITSAT · Logical Reasoning
Most important topics from Logical Deduction for BITSAT Logical Reasoning 2026 — high-weightage areas based on previous year analysis.
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Logical Deduction — Syllabus & Topics
Topics covered in Logical Deduction for BITSAT Logical Reasoning.
Topics in Logical Deduction
1
Understanding the Five Verdict Categories
- Each inference must be evaluated solely on the basis of the passage — no external knowledge should influence your verdict.
- Definitely True (DT): The inference logically and necessarily follows from the facts stated. No room for doubt.
- Probably True (PT): The inference is likely to be true given the facts, but it is not explicitly confirmed. It is a reasonable extrapolation.
2
Decision Framework: How to Evaluate Each Inference
- Step 1 — Read the passage completely and identify the key factual claims.
- Step 2 — Read the inference carefully, noting its scope (all/some/none), direction (positive/negative), and subject.
- Step 3 — Check if the passage directly states the inference (DT) or directly contradicts it (DF).
3
Analysing Passage Types and Common Inference Patterns
- Passages in Logical Deduction typically belong to categories: Economic/Financial, Social/Political, Scientific/Technological, or Historical/Cultural.
- Economic passages often contain statistics, comparisons, and trend data — inferences about causation, future trends, and comparisons with unmentioned entities are frequently DI.
- Scientific/Technological passages often generate inferences about applicability, advantages, and comparisons with competing technologies — these are often PT or DI.
4
Worked Examples and Verdict Justification
- Passage-1 Example: 'India has emerged as an IT superpower' (given fact). Inference: 'India can compete with US in IT' — the passage gives no information about the US IT sector; hence DI, not DT.
- Passage-1 Example: 'Hire and Fire culture was introduced into corporations after economic reform' is an inference that slightly extends the passage. Since the passage only says it 'infiltrated', it do
- Passage-2 Example: 'FIIs net inflows = Rs 3187 crore; domestic institutions net sales = Rs 2964 crore; net sales substantially offset net inflows' — the inference that FIIs bought more than what domes
Key Concepts
An inference is classified as 'DefinitelyAn inference is 'Probably True' whenWhen the passage provides insufficient informationAn inference is 'Probably False' whenAn inference is 'Definitely False' when
Frequently Asked Questions
What topics are covered in Logical Deduction for BITSAT?
Logical Deduction is an important chapter in BITSAT Logical Reasoning. It covers key concepts and formulas that are frequently tested in the exam. Key topics include: Understanding the Five Verdict Categories, Decision Framework: How to Evaluate Each Inference, Analysing Passage Types and Common Inference Patterns, Worked Examples and Verdict Justification.
How important is Logical Deduction for BITSAT?
Logical Deduction is a frequently tested chapter in BITSAT Logical Reasoning. Questions from this chapter appear regularly in previous year papers.
How to prepare Logical Deduction for BITSAT?
Start by understanding the core concepts, then solve practice questions. Focus on formulas and their applications. Use revision notes for quick review before the exam.
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