DAY 15 I UPSC REASONING | PYQ SERIES I CHAPTER 15 I INEQUALITIES I PRELIMS 2026 @KarmrathiIAS

Описание: DAY 15 I UPSC REASONING | PYQ SERIES I CHAPTER 15 I INEQUALITIES I PRELIMS 2026 @KarmrathiIAS
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The video, "DAY 15 I UPSC REASONING | PYQ SERIES I CHAPTER 15 I INEQUALITIES I PRELIMS 2026," is part of a UPSC reasoning PYQ series, focusing on inequalities (0:06). The instructor reviews various inequality rules and symbols (1:08), demonstrating how to combine them to draw conclusions. The video covers several past year questions (PYQs) from UPSC exams, ranging from 2013 to 2023, offering detailed solutions and explanations for each.

Key topics and examples covered:
Basic Inequality Concepts (1:08)

Identifying Conclusions from Statements (2:32):
(2:32-4:33).
(7:51): A problem with "pen, pencil, book, and cap" demonstrates how different arrangements can lead to varying conclusions, emphasizing the importance of finding statements that are "always true" (7:51-10:32).
Interpreting Complex Statements about Weight (10:50): This section presents a more challenging problem involving the weights of Sohan, Mohan, and Rohan, highlighting situations where the greatest or least weight cannot be definitively determined due to ambiguous information (10:50-17:15).
Numerical Inequalities (17:26): The video tackles an example with numerical values for x and y, showing how to determine correct inequality relationships based on given ranges (17:26-19:40).
Determining the Oldest Person from Multiple Statements (19:50): An exercise where multiple statements about ages (A is older than B, C and D are same age, etc.) are combined to find the oldest person, illustrating that sometimes all statements are needed to reach a conclusion (19:50-21:56).
Symbolic Inequalities and Derivations (22:00): The instructor delves into a complex problem where mathematical symbols (+, -, *, /) represent specific inequality relationships (e.g., "A + B means A is neither smaller nor equal to B"). This section emphasizes careful translation of symbols into inequalities and then drawing conclusions (22:00-31:20).
Final UPSC PYQ Discussion (31:20): The video concludes with a 2025 UPSC question, reiterating the process of combining given inequality statements and evaluating potential conclusions for certainty (31:20-33:20).