Question Find Day on a Particular Date

Duration: 5 min

This video lesson is available to enrolled students.

Return to /learn/RSSB-SENIOR-COMPUTER-INSTRUCTOR/paper-1-logical-reasoning-and-analytical-ability/calendar/finding-day-on-a-given-date/asset-question-find-day-on-a-particular-date after enrolling

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 | Fundamentals of Computer: Basics of COA, Number System, Floating Point Rep, Number Representation
  10. Paper - 2 | Digital Logic Systems: Digital Systems & Boolean Basics, Logic Gates & Hardware, Boolean Expression, Boolean Minimization, Combinational Circuit, Sequential Circuits
  11. Paper-2 | Operating Systems: Introduction to OS, Process Management, CPU Scheduling, Process Synchronization, Deadlock, Threads & Process Creation, Memory Management, Virtual Memory, Disc Scheduling, File Management, Linux OS, Distributed Systems
  12. Paper-2 | Database Management System: 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
  13. Paper-2 | Data Structures: Introduction to DS, Array, Stack, Queue, Linked List, Tree, Graphs, Hashing
  14. Paper-2 | C Programming: C Fundamentals, Control Flow, Functions, Arrays & Pointers, Storage Classes, Structures & Enums, DMA, Macros, Scoping & File Handling
  15. Paper 2 | Oops, C++, Java: Language Design, OOPS with C++, Java, .Net Programming, Java Fundamentals
  16. 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
  17. Paper 2 | Emerging Trends and AI: Emerging Tech Trends, कंप्यूटर के मूल सिद्धांत / Computer Fundamentals, व्यापार, विपणन एवं उपभोक्ता संरक्षण / Trade, Marketing and Consumer Protection, कंप्यूटर नेटवर्क / Computer Networks
  18. Paper-2 | Algorithms: Algorithm Analysis, Time Complexity Analysis, Sorting Algorithms, Greedy Algorithms, Advanced Algorithms
  19. Paper 2 | Data Communication and Network Security: Introduction to CN, Data Communication, DLL: Access Control, DLL: Flow Control, DLL: Error Control, 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, Ethical Hacking
  20. Paper-2 I Software Engineering: Fundamentals of Software Engineering, Software Requirements and Quality Assurance, Software Design, Estimation and Metrics, Software Testing, Software Maintenance and Configuration Management
  21. Paper-2 | Computer Organization and Architecture: Cache Memory Organization, Input Output Organisation, Instr Formats & Modes, Control Unit Design, Register Transfer and Microoperations
  22. Paper-2 | Web Development: JavaScript-Basics, HTML Basics, CSS, XML
  23. Pedagogy: वृद्धि और विकास / Growth and Development, Concept of Pedagogy, संज्ञानात्मक प्रक्रियाएँ / Cognitive Processes, विकास के सिद्धांत / Theories of Development, समावेशी शिक्षा / Inclusive Education, Experiential Pedagogy, समाजीकरण और जेंडर / Socialisation and Gender, National Education Policy (NEP) 2020
  24. Live Sessions: RSSB Live Sessions
  25. RSSB Paper 1 - Full Mock Tests:
  26. RSSB Paper 2 - Full Mock Tests:
  27. SCI Previous Year Papers:
AI summary & chapters

AI Summary

An AI-generated summary of this video lecture.

This video is a tutorial on calculating the day of the week for a given date, specifically 14 March 1965. The instructor, Yash Jain, uses a step-by-step method involving the calculation of odd days. The process begins by breaking down the year 1964 into 1600 and 364. The number of odd days for 1600 years is taken as 0, as per the standard rule. For the remaining 364 years, the calculation involves finding the number of leap years and ordinary years. The instructor calculates that 364 years contain 86 leap years and 278 ordinary years, resulting in a total of 400 odd days. This is then reduced to 1 odd day (400 mod 7 = 1). The next step is to calculate the odd days for the months of January and February 1965, which are 31 and 28 days respectively, totaling 59 days, which is 3 odd days (59 mod 7 = 3). Finally, the odd days for the 14 days of March are calculated as 14 mod 7 = 0. The total number of odd days is the sum of all these components: 0 (from 1600) + 1 (from 364 years) + 3 (from Jan-Feb) + 0 (from March) = 4. The instructor then maps this to a day of the week, stating that 0 is Sunday, 1 is Monday, and so on, concluding that 4 corresponds to Thursday. The video uses a digital blackboard with a table of odd days for different century years and a list of month lengths.

Chapters

  1. 0:00 – 2:00 00:00-02:00

    The video opens with a title card showing a calendar and the word 'CALENDAR'. The main content begins with a question displayed on a digital blackboard: 'On what day does 14 March 1965 lie?'. The instructor, Yash Jain, introduces the problem. A table on the left lists the number of odd days for different century years: 100 years have 5 odd days, 200 have 3, 300 have 1, and 400, 800, 1200, and 1600 have 0 odd days. The instructor begins the calculation by writing '1964 = 1600 + 364' on the board, breaking down the year into a base of 1600 and the remaining 364 years. The instructor explains that 1600 years have 0 odd days, which is a standard rule in this method.

  2. 2:00 – 4:46 02:00-04:46

    The instructor continues the calculation for the 364 years. He explains that 364 years consist of 86 leap years and 278 ordinary years. He calculates the total odd days as (86 * 2) + (278 * 1) = 172 + 278 = 450. He then reduces this to 450 mod 7, which is 1 odd day. Next, he calculates the odd days for the months of January and February 1965, writing 'Jan -> 31' and 'Feb -> 28'. The sum is 59 days, which is 59 mod 7 = 3 odd days. He then calculates the odd days for the 14 days of March, which is 14 mod 7 = 0. The total number of odd days is the sum: 0 (from 1600) + 1 (from 364 years) + 3 (from Jan-Feb) + 0 (from March) = 4. The instructor then states that 0 is Sunday, 1 is Monday, 2 is Tuesday, 3 is Wednesday, and 4 is Thursday. Therefore, 14 March 1965 was a Thursday. The video ends with a 'THANKS FOR WATCHING' screen.

The video presents a complete, step-by-step solution to a classic calendar problem. It demonstrates a systematic method for finding the day of the week for any date by breaking the problem into manageable parts: calculating odd days for centuries, the remaining years, the months, and the days. The core of the method relies on the fact that a non-leap year has 1 odd day and a leap year has 2 odd days. The instructor uses a digital blackboard to clearly show the calculations, referencing a table of odd days for centuries and the number of days in each month. The final answer is derived by summing all the odd days and using a simple mapping to the days of the week, concluding that 14 March 1965 was a Thursday.

Loading lesson…