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Class 11 Maths in Hindi - NCERT Revision

Class 11 Maths in Hindi - NCERT Revision

Written by: PadhaiPaglu
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Chapter-by-chapter NCERT revision for Class 11 Maths, explained in Hindi. One short episode per chapter with a quick quiz and a one-minute recap. Free notes and practice: https://padhaipaglu.com The narration is AI-generated (a synthetic voice, not a real person's). Chapter content follows the NCERT syllabus. Education
Episodes
  • Probability

    Probability
    Oct 12 2026
    Probability, Class 11 Mathematics NCERT Chapter 14: quick revision in Hindi, about 15 minutes, with quick quizzes and a one-minute recap. Free NCERT notes, flashcards and practice: https://padhaipaglu.com In this episode: - Event and sample space - Types of events: impossible, sure, simple, compound - Algebra of events: union, intersection, complement - Mutually exclusive and exhaustive events - Three axioms of probability - Equally likely outcomes, P(E) = n(E)/n(S) - Addition theorem for P(A or B) - Probability of the complement, P(not A) Timestamps: 0:00 Introduction 0:23 Roadmap 0:57 Event and sample space 1:56 Mistake: possible vs. occurred 2:21 Types of events: impossible, sure, simple, compound 2:43 Algebra of events: union, intersection, complement 3:33 Mutually exclusive events 4:52 Exhaustive events and partitions 5:44 Mistake: mutually exclusive vs. exhaustive 6:06 Quick quiz 1 6:45 Three axioms of probability 8:17 Quick quiz 2 8:50 Equally likely outcomes formula 10:09 Addition theorem for P(A or B) 11:14 Mistake: forgetting to subtract intersection 11:34 Probability of the complement, not A 12:40 Mistake: assuming not A is always half 13:06 Quick quiz 3 13:52 One-minute recap The narration is AI-generated (a synthetic voice, not a real person's). Chapter content follows the NCERT syllabus.
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    15 mins
  • Statistics

    Statistics
    Oct 12 2026
    Statistics, Class 11 Mathematics NCERT Chapter 13: quick revision in Hindi, about 15 minutes, with quick quizzes and a one-minute recap. Free NCERT notes, flashcards and practice: https://padhaipaglu.com In this episode: - Why average alone is not enough: dispersion - Range as a measure of dispersion - Mean deviation about mean and median - Mean deviation for grouped data - Variance and standard deviation - Shortcut (step-deviation) method - Effect of shift and scale on variance - Coefficient of variation and correcting wrong observations Timestamps: 0:00 Introduction 0:22 Roadmap 0:54 Why mean alone is not enough: dispersion 1:38 Mistake 1: same mean does not mean same data 2:05 Range: the simplest measure of dispersion 3:02 Mean deviation: using every data point 3:50 Worked example: mean deviation about the mean 5:02 Mistake 2: forgetting the absolute value 5:25 Mean deviation for grouped data 6:08 Mistake 3: forgetting to multiply by frequency 6:29 Limitations of mean deviation 6:47 Variance and standard deviation explained 7:43 Mistake 4: confusing variance with standard deviation 8:07 Standard deviation for grouped data, shortcut method 8:57 Effect of shift and scale on mean and variance 10:16 Quick quiz 1 10:48 Mistake 5: thinking shift changes variance 11:09 Quick quiz 2 11:54 Combined data and coefficient of variation 12:30 Quick quiz 3 13:07 Correcting a wrong observation in mean and variance 13:42 Mistake 6: changing n when replacing an observation 13:58 One-minute recap Next chapter: Probability The narration is AI-generated (a synthetic voice, not a real person's). Chapter content follows the NCERT syllabus.
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    15 mins
  • Limits and Derivatives

    Limits and Derivatives
    Oct 12 2026
    Limits and Derivatives, Class 11 Mathematics NCERT Chapter 12: quick revision in Hindi, about 15 minutes, with quick quizzes and a one-minute recap. Free NCERT notes, flashcards and practice: https://padhaipaglu.com In this episode: - Derivative as instantaneous rate of change - Meaning of a limit (left-hand and right-hand) - Algebra of limits for polynomials and rational functions - The number e and the log(1+x)/x limit - Trigonometric limits and the Squeeze theorem - Derivative by first principle - Product, quotient, power and chain rule - Continuity and differentiability Timestamps: 0:00 Introduction 0:20 Roadmap 0:52 Derivative intuition: average vs instantaneous velocity 2:14 Mistake: average rate vs instantaneous rate 2:34 What a limit means: left-hand and right-hand limits 3:51 Mistake: limit vs the function's value at a point 4:08 Algebra of limits: polynomials and rational functions 5:17 Quick quiz 1 5:50 The number e and a related standard limit 6:27 Trigonometric limits: sin x/x and the Squeeze theorem 7:40 Mistake: radians, and sin ax/bx shortcuts 8:03 Quick quiz 2 8:33 Derivative by first principle 9:39 Derivative rules: sum, product and quotient rule 10:18 Mistake: product rule is not derivative times derivative 10:32 Power rule and standard trigonometric derivatives 11:20 Mistake: the minus sign in cos, cot, cosec derivatives 11:32 Chain rule, and derivatives of e^x and log x 12:08 Continuity and differentiability 13:06 Quick quiz 3 13:33 One-minute recap Next chapter: Statistics The narration is AI-generated (a synthetic voice, not a real person's). Chapter content follows the NCERT syllabus.
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    15 mins
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