Important Practice Questions & Short Tricks

Duration: 6 min

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Inside: a video lesson and guided study material.

Module outline

  1. About Course: About the Course
  2. Paper 2 | Digital Logic: Digital Systems & Boolean Basics, Logic Gates & Hardware, Boolean Expression, Boolean Minimization, Combinational Circuit, Sequential Circuits, Number System, Number Representation, Floating Point Rep
  3. Paper 2 | Computer Organization And Architecture: Basics of COA, Cache Memory Organization, Input Output Organisation, Pipelining, Control Unit Design, Instr Formats & Modes, Programming the Basic Computer
  4. Paper 2 | Analog And Digital Communication: Introduction to Communication Systems & Random Signals, Analog Communication Systems, Information Theory & Digital Communication Fundamentals, Digital Modulation & Detection Techniques, Error Control, Synchronization & Multiple Access Techniques
  5. Paper 2 | Programming in C: C Fundamentals, Control Flow, Functions, Arrays & Pointers, Storage Classes, Structures & Enums, DMA, Macros, Scoping & File Handling
  6. Paper 2 | Data Structures And Programming: Introduction to DS, Array, Stack, Queue, Linked List, Tree, Graphs, Hashing, Java, OOPS with C++, Java Fundamentals, Array, String, IO & References
  7. Paper 2 | Algorithms: Algorithm Analysis, Sorting Algorithms, Time Complexity Analysis, Greedy Algorithms, Dynamic Programming, Minimum Spanning Trees, Shortest Path Algos
  8. Paper 2 | Compiler Design: Intro to Compilers, Lexical Analysis, Grammar & CFG, Syntax Analysis: Top-Down, Syntax Analysis: Bottom-Up, Semantic Analysis & SDT, Intermediate Code Gen, Code Optimization, Run Time Environment
  9. Paper 2 | Operating System: Introduction to OS, Process Management, CPU Scheduling, Process Synchronization, Threads & Process Creation, Deadlock, Memory Management, Virtual Memory, Disc Scheduling, File Management, Unix OS, Linux OS
  10. Paper 2 | Databases: Basics of DBMS, ER Diagram, Relational Model & Functional Dependencies, Keys & Integrity Constraints, Normalization (1NF - BCNF), Decomposition Properties & 4NF, Relational Algebra, SQL, Relational Calculus, File Organization & Indexing, Transaction Management, Concurrency Control
  11. Paper 2 | Information Systems and Software Engineering: Fundamentals of Software Engineering, Software Requirements and Quality Assurance, Software Design, Estimation and Metrics, Software Testing, Software Maintenance and Configuration Management
  12. Paper 2 | Computer Networks: 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
  13. Paper 2 | Internet & Web Technologies: Website, Browser & Services, Internet Fundamentals, Web Design & Development, Protocols & Services, Web Publishing & Hosting, Server Side & Security, Emerging Technologies, HTML Basics, JavaScript-Basics, CSS, XML, HTML5
  14. Paper 2 | Cyber Security And Emerging Technologies: Emerging Tech Trends, Internet of Things
  15. Paper 2 | Cloud Technology: Cloud Computing
  16. Paper 2 | Probability and statistics: Probability, Statistics
  17. Paper-1 English: Vocabulary, Preposition, Articles, Comprehension / Reading Comprehension / Unseen Passages (Critical Reasoning) (Paragraph Questions), Sentence Re-arrangements (Para Jumbles) (Narrative Sequencing), Sentence Correction (Error Correction), Sentence Completion (Fill in the blanks), Cloze Test (Cloze Passage), Sentence Construction
  18. Paper 1 General Mental Ability & Logical reasoning: Ratio and Proportion (Ratios), Divisibility Rules, Data Interpretation, Mixture and Alligation, Permutation and Combination, Logarithm, Number System, HCF LCM, Sequence and Series (Series), Speed Time and Distance, Series (Number and Letter Series) (Numerical Relations and Reasoning), Coding Decoding, Data Sufficiency, Non Verbal Reasoning (Spatial Aptitude) (Spatial Reasoning) (Visual Reasoning), Percentage, Average, Powers and Exponents (Surds and Indices), Algebra, Profit and Loss, Simple Interest and Compound Interest, Time and Work, Pipe and Cistern, Mensuration and Geometry, Mental Ability, Age Problems, Partnership, Arithmetic, Speed Mathematics and Basic Mathematics, Syllogisms, Deductive and Inductive Reasoning (Logical Deduction and Induction) (Prepositional Reasoning), Seating Arrangements, Blood Relations, Directions (Direction Test), Analytical Reasoning (Counting Figures Reasoning), Puzzle Solving (Puzzles), Calendar, Clock, Cubes & Dices, Selection Decision Table (Decision Making), Logical Sequence Of Words, Venn Diagram, Analogy
  19. Paper-1 General Knowledge & Current Affairs: State Wise GK, History, Geography, GK- Current Affairs, Static General Knowledge
  20. Full Length Mock Test:
AI summary & chapters

AI Summary

An AI-generated summary of this video lecture.

The video is a lecture on solving logical reasoning problems related to calendars, presented by an instructor from Knowledge Gate. The first problem, asked in a TCS interview, is a riddle about age: 'The day before yesterday, I was 25 years old, and next year I will turn 28.' The instructor explains that this is possible if the person's birthday is on December 31st and the current date is January 1st of a new year. On December 30th of the previous year, the person was 25. On December 31st, they turned 26. On January 1st of the current year, they are still 26, but they will turn 27 in the current year and 28 in the following year. The second problem asks for the maximum gap between two successive leap years, which is 8 years, as demonstrated by the sequence 1896, 1904, 1908, 1912, 1920, etc. The final problem asks how many weekends are in a year, with the instructor calculating that a year has 52 weeks and 1 or 2 extra days, leading to 52 or 53 weekends, with 53 being the maximum possible. The video uses a digital blackboard for calculations and includes on-screen text for the questions and options.

Chapters

  1. 0:00 – 2:00 00:00-02:00

    The video opens with a title card for a 'CALENDAR' topic, followed by a lecture screen. The instructor, Yash Jain, introduces a logical puzzle: 'The day before yesterday, I was 25 years old, and next year I will turn 28. How is it possible?' The question is displayed on a green bar at the top. The instructor begins to analyze the problem, setting up the context of a TCS interview question from 2019. The background is a black digital board with white chalk-style drawings of school supplies. The instructor is visible in a small window in the bottom right corner.

  2. 2:00 – 5:00 02:00-05:00

    The instructor begins to solve the age riddle on the digital blackboard. He writes 'DOB: 31st December' and then uses a timeline to explain the logic. He writes '31st December 2007 -> 25' and '30th December 2008 -> 26', showing that the person was 25 on December 30, 2007. He then writes '1st Jan 2008 -> 26' and '31st Dec 2009 -> 28', explaining that on January 1, 2008, the person is 26, and they will turn 27 in 2008 and 28 in 2009. The key insight is that the 'day before yesterday' was December 30, 2007, and 'next year' refers to 2009, when they will turn 28. The instructor uses arrows and dates to clearly illustrate the timeline.

  3. 5:00 – 6:27 05:00-06:27

    The video transitions to a new problem: 'The maximum gap between two successive leap year is?'. The options are a) 4, b) 8, c) 2, d) 1. The instructor explains that a leap year occurs every 4 years, but century years are not leap years unless divisible by 400. He provides the example of 1896 and 1904, showing a gap of 8 years. He then moves to the next problem: 'How many weekends are there in a year?'. He explains that a year has 365 days, which is 52 weeks and 1 day, or 52 weeks and 2 days in a leap year. Since a weekend consists of 2 days (Saturday and Sunday), there are at least 52 weekends. In a non-leap year, the extra day could be a Saturday or Sunday, making it 53 weekends. In a leap year, the two extra days could be a Saturday and Sunday, also making it 53 weekends. The maximum is 53. The video ends with a 'THANKS FOR WATCHING' screen.

The video presents a structured lesson on calendar-based logical reasoning, progressing from a complex riddle to two more direct calculation problems. The core teaching method involves breaking down each problem into a clear, step-by-step logical process, often using a timeline or a digital blackboard to visualize the sequence of events. The first problem highlights the importance of carefully interpreting the temporal context of a statement, particularly the ambiguity of 'next year'. The second problem demonstrates the application of the rules for leap years, showing that the maximum gap is 8 years due to the century rule. The final problem applies basic division and understanding of the week cycle to determine the maximum number of weekends in a year. The synthesis of these problems is the application of logical deduction and fundamental calendar rules to solve seemingly paradoxical or quantitative questions.

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