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Curated by: Khan Academy India - English (28 videos)
In this video, we calculate probabilities related to the random arrangement of a sequence of events, using the example of Riya visiting four cities (A, B, C, D) in a random order. We'll determine the probability of specific orderings, such as A being visited before B, A before B and B before C, A being visited first and B last, A being visited either first or second, and A being visited just before B. 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:algebra-of-events/e/algebra-of-probabilities-of-events) Timestamps: 00:00 Problem 1: Probability of visiting city A before city B 02:05 Problem 2: Probability of visiting A before B, and B before C 03:27 Problem 3: Probability of visiting A first and B last 04:15 Problem 4: Probability of visiting A either first or second 05:00 Problem 5: Probability of visiting A just before 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