Type 2 Important Practice Questions
Duration: 6 min
This video lesson is available to enrolled students.
AI Summary
An AI-generated summary of this video lecture.
This educational video is a lecture on 'Coding Decoding' for competitive exams, presented by an instructor named Yash Jain. The video begins with a visual example of a substitution cipher, where the word 'MONKEY' is encoded as 'KMLICW' by shifting each letter back by two positions in the alphabet. The instructor then introduces a series of practice questions, categorized as 'Type 2', which are based on the concept of 'code language' or 'substitution'. The core method demonstrated is to identify the actual meaning of a word by tracing its name through the given code. For instance, in a question where 'white' is called 'blue', 'blue' is called 'red', and so on, the instructor explains that the color of human blood, which is 'red', is now called 'yellow' in this code. The video uses a mix of on-screen text, diagrams, and a split-screen format showing the instructor and a female speaker. It concludes with a final 'Thanks for Watching' screen.
Chapters
0:00 – 2:00 00:00-02:00
The video opens with a title slide for 'CODING DECODING'. It presents a worked example where the word 'MONKEY' is encoded as 'KMLICW'. The diagram shows the letters of 'MONKEY' and 'KMLICW' with arrows indicating a shift of -2 for each letter (e.g., M -> K, O -> M, N -> L). The instructor explains that this is a simple substitution cipher where each alphabet is decreased by 2. The slide then transitions to a new example, 'ORANGE', and the instructor states that the same rule applies, so each letter of 'ORANGE' should be decreased by 2 to get the code. The instructor's name, Yash Jain, and the channel name, Knowledge Gate Educator, are visible in the bottom right corner.
2:00 – 5:00 02:00-05:00
The video transitions to a new section titled 'Questions Type 2'. The instructor presents a series of problems based on code language. The first question asks, 'If white is called blue, blue is called red, red is called yellow, yellow is called green, green is called black, black is called violet and violet is called orange, what would be the colour of human blood?'. The instructor explains that the actual color of human blood is 'red', but in this code, 'red' is called 'yellow', so the answer is 'yellow'. The second question is, 'If air is called green, green is called blue, blue is called sky, sky is called yellow, yellow is called water and water is called pink, then what is the color of clear sky?'. The instructor identifies that the actual color of the clear sky is 'blue', but in this code, 'blue' is called 'sky', so the answer is 'sky'. The third question is, 'If train is called bus, bus is called tractor, tractor is called car, car is called scooter, scooter is called bicycle, bicycle is called moped, which is used to plough a field?'. The instructor explains that a tractor is used to plough a field, but in this code, 'tractor' is called 'car', so the answer is 'car'. The fourth question is, 'If green means red, red means yellow, yellow means blue, blue means orange and orange means green, what is the colour of clean sky?'. The instructor identifies that the actual color of the clean sky is 'blue', but in this code, 'blue' is called 'orange', so the answer is 'orange'. The instructor uses a split-screen format, with the main content on the left and the instructor in a smaller window on the right.
5:00 – 6:00 05:00-06:00
The video concludes with a final slide that displays the text 'THANKS FOR WATCHING' in large white letters on a dark red background. This is a standard closing screen for the lecture, indicating the end of the content.
The video provides a structured lesson on solving 'Type 2' coding decoding questions. The central concept is to identify the actual meaning of a word by tracing its name through a chain of substitutions. The instructor demonstrates this by first establishing a simple rule (shifting letters back by 2) and then applying the same logic to more complex, abstract code language problems. The key method is to find the real-world answer and then determine what it is called in the given code. The video uses a clear, step-by-step approach with on-screen text and diagrams to illustrate the problem-solving process, making it suitable for students preparing for competitive exams.