Critical Reasoning - Concepts, Short Tricks & Questions (1)

Duration: 11 min

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Module outline

  1. Quantitative Ability: Speed Mathematics and Basic Mathematics, Percentage, Ratio and Proportion (Ratios), Average, Profit and Loss, Simple Interest and Compound Interest, Time and Work, Pipe and Cistern, Speed Time and Distance, Number System, HCF LCM, Data Interpretation, Age Problems, Mixture and Alligation, Partnership, Algebra, Sequence and Series (Series), Mensuration and Geometry, Arithmetic
  2. Reasoning Ability: Puzzle Solving (Puzzles), Seating Arrangements, Coding Decoding, Blood Relations, Directions (Direction Test), Syllogisms, Data Sufficiency, Ranking, Order and Sequence, Series (Number and Letter Series) (Numerical Relations and Reasoning), Logical Sequence Of Words, Calendar, Clock, Cubes & Dices, Analytical Reasoning (Counting Figures Reasoning), Data Arrangement, Non Verbal Reasoning (Spatial Aptitude) (Spatial Reasoning) (Visual Reasoning), Deductive and Inductive Reasoning (Logical Deduction and Induction) (Prepositional Reasoning)
  3. Verbal Ability: Comprehension / Reading Comprehension / Unseen Passages (Critical Reasoning) (Paragraph Questions), Cloze Test (Cloze Passage), Sentence Re-arrangements (Para Jumbles) (Narrative Sequencing), Vocabulary, Sentence Completion (Fill in the blanks), Active Passive Voice (Voice), Direct and Indirect Speech, Subject Verb Agreement (Verb Noun Agreement), Tenses, Preposition, Articles, Sentence Correction (Error Correction)
  4. Programming Basics (MCQs + Interview): C Programming by Yash Sir, Programming in C++, Java, Python for Placements by Yash Sir
  5. OOPs (MCQs + Interview): Object Oriented Programming (OOPS)
  6. DBMS (MCQs + Interview): Basics of DBMS, ER Diagram, Relational Model & Functional Dependencies, Keys & Integrity Constraints, Normalization (1NF - BCNF), Transaction Management, Decomposition Properties & 4NF, Concurrency Control, Database Recovery, File Organization & Indexing, Relational Algebra, Database Security & Authorization
  7. SQL (MCQs + Interview): SQL
  8. Operating Systems (MCQs + Interview): Introduction to OS, Process Management, CPU Scheduling, Deadlock, Threads & Process Creation, Memory Management, Virtual Memory, Process Synchronization, Disc Scheduling, File Management, Security
  9. Computer Networks (MCQs + Interview): Introduction to CN, Data Communication, DLL: Access Control, DLL: Flow Control, DLL: Error Control, DLL: Framing, Data Link Layer - Ethernet, Net Layer: IPv4 & Proto, Net Layer: IP Addressing, Net Layer:Routing Protocol, Transport Layer Services, TL: Congestion & UDP, Application Layer, Hardware basics, Network Security, Mobile Technology, Cloud Computing and IoT, Cyber and Info Security
  10. Coding: Coding Questions by Yash Sir
  11. HR Interview: MR & HR Interview Preparation
AI summary & chapters

AI Summary

An AI-generated summary of this video lecture.

This lecture introduces critical reasoning as the active, skillful ability to conceptualize, analyze, question, and evaluate ideas and beliefs, explicitly contrasting it with dogma, defined as unquestioned information embraced without active thought or criticism. The instructor then applies this framework to a series of exam-style questions, beginning with an Infosys 2021 passage about the 20% decline in sugarcane acreage in India due to farmers shifting cultivation to other cash crops. The teaching method emphasizes vocabulary clarification, using dictionary entries for terms like 'acreage' and 'cash crop,' and defining the key term 'glut' as an excess of something, illustrated with the example sentence: 'The glut of coffee has forced down the price.' The core analytical technique demonstrated is identifying the word 'Conclusion' or inference prompts within questions to determine what can logically be drawn from stated facts. The instructor works through multiple-choice options (A-E), marking incorrect choices with red X marks and revealing correct answers, such as 'Correct Answer: Option B' for a question about the impact of a huge drop in sugarcane supply. Subsequent questions (Q3 and Q4) explore strengthening statements, such as whether farmers will grow sugarcane again due to increased sugar prices. The lesson progresses from conceptual definition to vocabulary building, then to structured analysis of inference and strengthening questions, concluding with a 'THANKS FOR WATCHING' slide.

Chapters

  1. 0:00 – 2:00 00:00-02:00

    The instructor, identified by a lower-third label as 'YASH JAIN SIR' from Knowledge Gate Educator, defines critical reasoning on a slide as 'the ability to actively and skillfully conceptualize, analyze, question and evaluate ideas and beliefs.' The slide contrasts this with dogma: 'Dogma is unquestioned information — information that is embraced without the intervention of active thought or criticism.' The lesson then transitions to an Infosys 2021 exam question, introducing a passage about sugarcane acreage in India falling by 20% due to a shift in cultivation from sugarcane to other cash crops.

  2. 2:00 – 5:00 02:00-05:00

    The instructor clarifies vocabulary from the passage using dictionary entries, showing 'acreage' with phonetic spelling '/ˈeɪk(ə)rɪdʒ/' and 'cash crop' labeled as a noun, with a Hindi line beneath the latter. The focus returns to the Q1 passage where the word 'glut' is circled in red and 'world economy' is underlined. A dedicated vocabulary slide defines 'glut' as 'more of something than is needed,' with the example: 'The glut of coffee has forced down the price.' The instructor then highlights the word 'Conclusion' on screen, emphasizing it as the key to answering inference questions based on the stated facts.

  3. 5:00 – 10:00 05:00-10:00

    The instructor analyzes multiple-choice options A through E for the sugarcane passage, marking a red X beside option C. On-screen text reveals 'Correct Answer: Option B' with an explanation referencing a huge drop in sugarcane supply. The lesson progresses to Q3, which asks which option will strengthen the statement: 'The farmers will again grow sugarcane next year due to the increased price of sugar.' The instructor continues working through options, demonstrating how to evaluate which statements logically support or infer from the given facts about the sugarcane industry.

  4. 10:00 – 11:21 10:00-11:21

    The final segment presents Q4, showing the same sugarcane acreage passage with options A through E. The instructor points toward the slide and gestures while explaining, marking a red X near option D to indicate an incorrect choice. The video concludes with the text 'THANKS FOR WATCHING' displayed on screen, signaling the end of this introductory critical reasoning session.

The lecture follows a clear pedagogical sequence: conceptual definition, vocabulary preparation, and applied problem-solving. The central idea is that critical reasoning requires active evaluation rather than passive acceptance (dogma). The instructor's method for tackling exam questions involves three steps: first, ensuring comprehension of all vocabulary (e.g., 'glut,' 'acreage'); second, identifying the question type by locating keywords like 'Conclusion' or 'strengthen'; and third, systematically eliminating options using logical inference from stated facts. The recurring sugarcane passage serves as a consistent context for practicing different question types (inference, strengthening), allowing students to see how the same facts support multiple analytical approaches. Red X marks and on-screen answer reveals provide immediate feedback, reinforcing correct reasoning patterns.

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