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Curated by: Khan Academy India - English (28 videos)
Let's use our understanding of sets and Venn diagrams to find probability of union of events. We first look at a concrete example and try to find the probability of event A or B. Through the result, we try to observe a pattern which we then generalise into a robust formula. We then prove that formula using axioms of probability discussed in previous videos. Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now! (https://www.khanacademy.org/math/ncert-class-11/xea4762213f311c5e:probability-ncert-new/xea4762213f311c5e:axiomatic-approach-to-probability/e/probability-of-combination-of-events) Timestamps: 00:00 Concrete example (Finding probability of A or B) 03:26 Visualising the formula for P(A or B) 04:26 Proof using axioms for P(A or B) Khan Academy India is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We have videos and exercises that have been translated into multiple Indian languages, and 15 million people around the globe learn on Khan Academy every month. Support Us: https://india.khanacademy.org/donate Created by Ashish Gupta