Category 3 Find Day on a Particular Date

Duration: 13 min

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Inside: a video lesson and guided study material.

Module outline

  1. About the Course: About the Course
  2. Paper-1 & 2 | Basic Numeracy: अनुपात और समानुपात / Ratio and Proportion, Divisibility Rules, मिश्रण और एलिगेशन / Mixture and Alligation, Permutation and Combination, Logarithm, संख्या पद्धति / Number System, महत्तम समापवर्तक और लघुत्तम समापवर्त्य / HCF and LCM, Sequence and Series (Series), समय, चाल और दूरी / Time, Speed and Distance, प्रतिशत / Percentage, औसत / Average, घन क्षेत्रमिति / Solid Mensuration, Age Problems, Arithmetic, Statistics, Probability, लाभ, हानि और बट्टा / Profit, Loss and Discount, साधारण और चक्रवृद्धि ब्याज / Simple and Compound Interest, Partnership, Speed Mathematics and Basic Mathematics, Algebra, सरलीकरण, घातांक और करणी / Simplification, Indices and Surds, समय और कार्य / Time and Work, Pipe and Cistern, RSSB Specific Videos - Basic Numeracy, समुच्चय, संबंध, फलन और विविक्त गणित / Sets, Relations, Functions and Discrete Mathematics, संख्या पद्धति और संख्या सिद्धांत / Number Systems and Number Theory, निर्देशांक ज्यामिति, सदिश और त्रिविमीय ज्यामिति / Coordinate Geometry, Vectors and 3D Geometry, बहुपद, समीकरण और सम्मिश्र संख्याएँ / Polynomials, Equations and Complex Numbers
  3. Paper-1 & 2 | Data Interpretation: आँकड़ा निर्वचन / Data Interpretation
  4. Paper-1 & 2 | General Mental Ability: Mental Ability, RSSB Specific Videos - Mental Ability
  5. Paper-1 & 2 | Logical Reasoning and Analytical Ability: श्रेणी / Series, कूट लेखन एवं कूट वाचन / Coding-Decoding, Data Sufficiency, अशाब्दिक तर्क / Non-Verbal Reasoning, Syllogisms, बैठक व्यवस्था एवं पहेलियाँ / Seating Arrangement and Puzzles, रक्त संबंध / Blood Relations, दिशा एवं दूरी / Direction and Distance, Analytical Reasoning (Counting Figures Reasoning), गणितीय संक्रियाएँ एवं लुप्त संख्या / Mathematical Operations and Missing Numbers, कैलेंडर एवं घड़ी / Calendar and Clock, Clock, घन, पासा एवं आकृतियों की गिनती / Cubes, Dice and Figure Counting, वेन आरेख, न्याय वाक्य एवं असमानता / Venn Diagrams, Syllogism and Inequalities, सादृश्यता एवं वर्गीकरण / Analogy and Classification, क्रम एवं रैंकिंग / Order and Ranking, कथन आधारित तार्किक विवेचन / Statement-Based Reasoning, Data Arrangement, वर्णमाला एवं संख्या परीक्षण / Alphabet and Number Test, Crypt Arithmetic
  6. Paper-1 & 2 | Decision Making and Problem Solving: आँकड़ों की पर्याप्तता एवं निर्णय क्षमता / Data Sufficiency and Decision Making
  7. Paper-1 | General Science: वैज्ञानिक उपलब्धियाँ और अनुसंधान / Scientific Achievements and Research, Biology, Chemistry, RSSB Specific Videos
  8. Paper-1 | General Awareness: राज्य विशेष सामान्य ज्ञान / State-Specific General Knowledge, समसामयिकी / Current Affairs
  9. Paper - 2 | Digital Logic Systems: Digital Systems & Boolean Basics, Logic Gates & Hardware, Combinational Circuit, Sequential Circuits
  10. Paper-2 | Database Management System: Basics of DBMS, ER Diagram, Relational Model & Functional Dependencies, Keys & Integrity Constraints, Normalization (1NF - BCNF), Decomposition Properties & 4NF, Relational Calculus, Relational Algebra, SQL, NoSQL
  11. Paper-2 | Data Structures & Algorithms: Introduction to DS, Array, Stack, Queue, Linked List, Tree, Graphs, Algorithm Analysis, Sorting Algorithms, Intro to Compilers, Hashing
  12. Paper 2 | Data Communication and Network Security: Introduction to CN, Data Communication, Data Link Layer - Ethernet, DLL: Error Control, Net Layer: IPv4 & Proto, Net Layer: IP Addressing, Application Layer, Hardware basics, Network Security, Ethical Hacking
  13. Paper-2 | Operating Systems: Introduction to OS, Process Management, Memory Management, File Management, Deadlock
  14. Paper-2 | Computer Organization and Architecture: Basics of COA, Floating Point Rep, Cache Memory Organization, Input Output Organisation, Instr Formats & Modes, Control Unit Design, Register Transfer and Microoperations, Programming the Basic Computer, Number System, Number Representation
  15. Paper 2 | System Analysis and Design: Fundamentals of Systems and Information Systems, Fundamentals of Software Engineering, SDLC and Development Approaches, Software Documentation and Software Requirements Specification (SRS), SDD and Quality Assurance, Security, Risk Management & Maintenance, Software Testing
  16. Paper-2 | C Programming: C Fundamentals, Control Flow, Functions, Arrays & Pointers, Storage Classes, Structures & Enums, DMA, Macros, Scoping & File Handling
  17. Paper 2 | OOPS , C++ , JAVA: Language Design, OOPS with C++, Java, .Net Programming, Java Fundamentals
  18. Paper 2 | Python: Introduction to Python, Tokens, Variables, Data Types, I/O, Operators & Expressions, Control Flow & Looping, Collections & Strings, Functions & Modules, File Handling & Data Analysis
  19. Emerging Trends and AI: Emerging Tech Trends, कंप्यूटर के मूल सिद्धांत / Computer Fundamentals, व्यापार, विपणन एवं उपभोक्ता संरक्षण / Trade, Marketing and Consumer Protection
  20. Paper-2 | Data Processing (Ms-Office): MS Office Applications, कंप्यूटर सॉफ़्टवेयर / Computer Software, ऑपरेटिंग सिस्टम / Operating System, वर्ड प्रोसेसिंग (MS Word) / Word Processing (MS Word), प्रेज़ेंटेशन (MS PowerPoint) / Presentation Software (MS PowerPoint)
  21. Paper-2 | Internet and Web Technologies: HTML Basics, CSS, XML, JavaScript-Basics, Internet Fundamentals, Protocols & Services, Web Publishing & Hosting, Server Side & Security, Emerging Technologies, Terms & Abbreviations, Cyber Threats and Malware Attacks, Role of Internet and Web Services, Security in Mobile and Wireless Computing, साइबर सुरक्षा / Cyber Safety and Security, कंप्यूटर नेटवर्क / Computer Networks
  22. Paper 2 | Pedagogy: वृद्धि और विकास / Growth and Development, विकास के सिद्धांत / Theories of Development, Concept of Pedagogy, समावेशी शिक्षा / Inclusive Education, Experiential Pedagogy, आकलन और मूल्यांकन / Assessment and Evaluation, संज्ञानात्मक प्रक्रियाएँ / Cognitive Processes, समाजीकरण और जेंडर / Socialisation and Gender, National Education Policy (NEP) 2020
  23. Live Classes: RSSB Live Sessions
  24. Paper 1 - Full Mock Tests:
  25. Paper 2 - Full Mock Tests:
  26. BCI Previous Year Papers:
AI summary & chapters

AI Summary

An AI-generated summary of this video lecture.

This educational video is a lecture on solving calendar-based problems, a common topic in quantitative aptitude for IT company placements. The instructor, Yash Jain Sir from Knowledge Gate Educator, begins by introducing the concept of finding the day of the week for a given date, using the example of 1st October 2010 being a Monday to find the day for 25th June 2015. He categorizes these problems into four types: (a) Month and Year Same, Date Different; (b) Date and Month Same, Year Different; (c) Date and Year Same, Month Different; and (d) All three different. The main focus is on the third category, where the date and year are the same but the month changes. To solve this, he introduces a method using a 2019 calendar to count the number of odd days between the two months. He demonstrates this by counting the days from January to November 2019, noting that the number of days in each month is either 31 or 30, and that the total number of days from January to November is 334. He then explains that 334 days is equivalent to 47 weeks and 2 days, meaning the day of the week advances by 2 days. The video then presents a specific problem: if 23rd March 2015 is a Tuesday, what day is 23rd November 2015? The instructor applies the same method, counting the days from March to November, which is 244 days, or 34 weeks and 6 days. Since 244 mod 7 = 6, the day advances by 6 days from Tuesday, resulting in Monday. The video concludes with a similar problem from Wipro, where 16th January 1992 is a Monday, and the task is to find the day for 16th December 1992, reinforcing the method for a leap year.

Chapters

  1. 0:00 – 2:00 00:00-02:00

    The video opens with a title slide showing a calendar and the word 'CALENDAR'. The instructor, Yash Jain Sir, introduces the topic of calendar problems, which are frequently asked in IT company placements. He presents a sample problem: '1st October 2010 → Monday, 25th June 2015 → ???'. He then outlines four categories of such problems, with the first two being 'a) Month and Year Same, Date Different' and 'b) Date and Month Same, Year Different'. The on-screen text clearly labels these categories and provides examples for each.

  2. 2:00 – 5:00 02:00-05:00

    The instructor continues to explain the four categories of calendar problems. He introduces category 'c) Date and Year Same, Month Different', which is the focus of the current lesson. He provides an example: '1st October 2010 → Monday, 1st December 2010 → ???'. He then transitions to a method for solving this type of problem, which involves counting the number of days between the two months. He displays a 2019 calendar and begins to count the days from January to November, explaining that the number of days in each month is either 31 or 30, and that the total number of days from January to November is 334.

  3. 5:00 – 10:00 05:00-10:00

    The instructor continues to demonstrate the method for solving calendar problems. He explains that 334 days is equivalent to 47 weeks and 2 days, meaning the day of the week advances by 2 days. He then presents a specific problem from Accenture: 'Suppose if there is Tuesday on 23rd March 2015, then find day on 23rd November 2015?'. He applies the same method, counting the days from March to November, which is 244 days. He explains that 244 days is 34 weeks and 6 days, so the day advances by 6 days from Tuesday. He writes 'Tuesday + 6 days = Monday' on the screen, concluding that 23rd November 2015 is a Monday.

  4. 10:00 – 13:16 10:00-13:16

    The instructor presents a final problem from Wipro: '16th January 1992 → Monday, 16th December 1992 → ???'. He explains that 1992 is a leap year, which affects the number of days in February. He uses the same method of counting days from January to December, noting that the total number of days is 366. He explains that 366 days is 52 weeks and 2 days, so the day of the week advances by 2 days. He writes 'Monday + 2 days = Wednesday' on the screen, concluding that 16th December 1992 is a Wednesday. The video ends with a 'Thanks for Watching' screen.

The video provides a comprehensive, step-by-step guide to solving calendar problems, a key skill for quantitative aptitude tests. The core of the lesson is a practical method for finding the day of the week when the date and year are the same but the month changes. The instructor systematically breaks down the problem into manageable steps: identifying the category, counting the number of days between the months, calculating the number of odd days (the remainder when divided by 7), and then advancing the day of the week by that number of days. The use of a 2019 calendar as a visual aid makes the counting process clear. The lesson is reinforced with multiple worked examples, including one from Accenture and one from Wipro, demonstrating the method's application to both ordinary and leap years. The progression from a general concept to specific, real-world problems ensures a solid understanding of the technique.

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