Practise Questions (Python Module) (Q11-20)

Duration: 4 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: Ratio and Proportion (Ratios), Divisibility Rules, Mixture and Alligation, Permutation and Combination, Logarithm, Number System, HCF LCM, Sequence and Series (Series), Speed Time and Distance, Percentage, Average, Mensuration and Geometry, Age Problems, Arithmetic, Statistics, Probability, Profit and Loss, Simple Interest and Compound Interest, Partnership, Speed Mathematics and Basic Mathematics, Algebra, Powers and Exponents (Surds and Indices), Time and Work, Pipe and Cistern, RSSB Specific Videos - Basic Numeracy
  3. Paper-1 & 2 | Data Interpretation: 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: Series (Number and Letter Series) (Numerical Relations and Reasoning), Coding Decoding, Data Sufficiency, Non Verbal Reasoning (Spatial Aptitude) (Spatial Reasoning) (Visual Reasoning), Syllogisms, Seating Arrangements, Blood Relations, Directions (Direction Test), Analytical Reasoning (Counting Figures Reasoning), Puzzle Solving (Puzzles), Calendar, Clock, Cubes & Dices, Venn Diagram, Analogy, Ranking, Order and Sequence, Deductive and Inductive Reasoning (Logical Deduction and Induction) (Prepositional Reasoning), Data Arrangement, Logical Sequence Of Words, Crypt Arithmetic
  6. Paper-1 & 2 | Decision Making and Problem Solving: Selection Decision Table (Decision Making)
  7. Paper-1 | General Science: Physics, Biology, Chemistry, RSSB Specific Videos
  8. Paper-1 | General Awareness: State Wise GK, GK- 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, Artificial Intelligence
  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: Child Development, Concept of Pedagogy, Psychology, Theories, Inclusive Education, Experiential Pedagogy, Curriculum Framework & Reforms, 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 lecture on Python modules, focusing on the math, random, and statistics modules. The instructor presents a series of multiple-choice questions to test understanding. The first section covers the math module, explaining that math.cos(0) returns 1 and math.tan(0) returns 0. The second section focuses on the random module, identifying it as the correct module for generating random numbers, and explaining that random.random() returns a float between 0 and 1, while random.randint(1,5) returns an integer between 1 and 4. The final section covers the statistics module, identifying it as the correct module for statistical calculations, and explaining that statistics.mean([2,4,6]) returns 4 and statistics.median([1,3,5,7]) returns 4. The instructor uses a digital whiteboard to write and draw, and the video includes a brief interruption with a 'No Signal' error message.

Chapters

  1. 0:00 – 2:00 00:00-02:00

    The video begins with a presentation of multiple-choice questions about Python modules. Question 11 asks for the value of math.cos(0), with options 0, 1, -1, and Error. The instructor explains that the cosine of 0 is 1, so the correct answer is B. Question 12 asks what math.tan(0) returns, with options 1, 0, undefined, and Error. The instructor explains that the tangent of 0 is 0, so the correct answer is B. Question 13 asks which module is used to generate random numbers, with options math, statistics, random, and number. The instructor identifies the random module as the correct answer, C. Question 14 asks what random.random() returns, with options Integer between 0 and 1, Float between 0 and 1, Integer only, and Boolean value. The instructor explains that random.random() returns a float between 0 and 1, so the correct answer is B. Question 15 asks what random.randint(1,5) can return, with options 1 to 4, 1 to 5, 0 to 5, and 0 to 4. The instructor explains that randint returns an integer from the start (inclusive) to the stop (exclusive), so it can return 1 to 4, making A the correct answer.

  2. 2:00 – 4:13 02:00-04:13

    The lecture continues with question 16, which asks which function generates numbers excluding the stop value. The options are randint(), random(), randrange(), and choice(). The instructor explains that randrange() is the correct function, as it excludes the stop value, making C the correct answer. Question 17 asks what random.randrange(2,10,2) can return, with options 2,4,6,8; 2 to 10; 2,6,10; and Only 2. The instructor explains that the function generates numbers from 2 to 10 with a step of 2, so the possible values are 2, 4, 6, and 8, making A the correct answer. Question 18 asks which module is used for statistical calculations, with options math, random, statistics, and data. The instructor identifies the statistics module as the correct answer, C. Question 19 asks what statistics.mean([2,4,6]) returns, with options 4, 6, 2, and Error. The instructor calculates the mean as (2+4+6)/3 = 12/3 = 4, so the correct answer is A. Question 20 asks what statistics.median([1,3,5,7]) returns, with options 3, 5, 4, and Error. The instructor explains that the median of an even number of values is the average of the two middle values, so (3+5)/2 = 8/2 = 4, making C the correct answer. The video ends with a brief interruption showing a 'No Signal' error message.

The video provides a comprehensive review of three essential Python modules: math, random, and statistics. It progresses from basic trigonometric functions to random number generation and finally to statistical analysis. The instructor uses a clear, step-by-step approach, presenting questions and then explaining the correct answers with reasoning and calculations. The use of a digital whiteboard for writing and drawing helps to visually reinforce the concepts, making it an effective study resource for understanding these core Python functionalities.

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