Class 9 Maths · Chapter 7 · CBSE / NCERT
The Mathematics of Maybe: Introduction to Probability
Probability: measuring how likely something is. You’ll learn probability from trials and from counting outcomes, sample spaces and events, and tree diagrams for two-step experiments.
9 short lessons · about 35 minutes in all
What you’ll learn
- 1What makes something random3 min
- 2The scale from impossible to certain3 min
- 3Probability from trials4 min
- 4Counting favourable outcomes4 min
- 5Estimating a whole school from a sample4 min
- 6Why a streak does not change the next roll4 min
- 7Listing every possible outcome4 min
- 8Events as groups of outcomes4 min
- 9Tree diagrams for two-step experiments5 min
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What makes something random · about 3 minutes
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More Class 9 Maths
The other 13 chapters.
CH 1Orienting Yourself: The Use of Coordinates8 lessonsCH 2Introduction to Linear Polynomials9 lessonsCH 3The World of Numbers10 lessonsCH 4Exploring Algebraic Identities9 lessonsCH 5I’m Up and Down, and Round and Round10 lessonsCH 6Measuring Space: Perimeter and Area10 lessonsCH 8Predicting What Comes Next: Exploring Sequences and Progressions9 lessonsCH 9Propositions and their Converses12 lessonsCH 10How Quantities Combine: Understanding Data10 lessonsCH 11The World of Algorithms10 lessonsCH 12Quadrilaterals11 lessonsCH 13Two Variables, One Line12 lessonsCH 14Math of Space: Surface Area and Volume10 lessons
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