https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-probability-statistics/cc-7th-basic-prob/v/simple-probability 2021-07-02T09:35:30Z Simple probability: yellow marble In order to find the probability of picking a yellow marble from a bag, we have to first determine the number of possible outcomes, and then how many of them meet our constraints. Sal Khan video https://cdn.kastatic.org/googleusercontent/QAV26IABf-iDWDJ_6zdYp8m2wTLmlFVUjPmizBRBXw_9kRKVGOwhZPlMsInPT9S6ES9SfA9DSziQzVgg6GORCvO1XQ Simple probability: yellow marble In order to find the probability of picking a yellow marble from a bag, we have to first determine the number of possible outcomes, and then how many of them meet our constraints. https://cdn.kastatic.org/ka-youtube-converted/yUaI0JriZtY.mp4/yUaI0JriZtY.mp4 176 Probability calculations https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-probability-statistics/cc-7th-basic-prob/v/probability-1-module-examples 2021-07-02T09:35:29Z Simple probability: non-blue marble In this example we are figuring out the probability of randomly picking a non-blue marble from a bag. Again, we'll have to think about the possible outcomes first. Sal Khan video https://cdn.kastatic.org/googleusercontent/DxiBJPMM0ibk047TiDi8I53t6F2cvmgMFk_CTH_Jw1NA2x3bDV8zWQG1Om75lW4gHKmGDWCHU7RHEeKfBiS-u8dC Simple probability: non-blue marble In this example we are figuring out the probability of randomly picking a non-blue marble from a bag. Again, we'll have to think about the possible outcomes first. https://cdn.kastatic.org/ka-youtube-converted/mLE-SlOZToc.mp4/mLE-SlOZToc.mp4 596 Probability calculations https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-probability-statistics/cc-7th-basic-prob/e/probability_1 2026-03-15T17:11:10.340789021Z Simple probability Practice finding probabilities of events, such as rolling dice, drawing marbles out of a bag, and spinning spinners. Ben Alpert exercise https://www.khanacademy.org/math/precalculus/x9e81a4f98389efdf:prob-comb/x9e81a4f98389efdf:addition-rule-prob-precalc/v/probability-with-playing-cards-and-venn-diagrams 2023-04-15T06:53:33.172253602Z Probability with Venn diagrams Want to learn some probability? This video explains the probability of drawing a Jack or a Heart from a deck of 52 cards. It uses a Venn diagram to illustrate the concept of overlapping events and how to calculate the combined probability. Key definitions include "equally likely events" and "overlapping events". Sal Khan video https://cdn.kastatic.org/googleusercontent/Z0TuLq2KolavsrfDXSbLqi0S-wnlCrC13cKGG68wK9ljrTiXzRqvfq7IpWNzcwgzlpEOI8YmMafp4K4zO0sanvXu Probability with Venn diagrams Want to learn some probability? This video explains the probability of drawing a Jack or a Heart from a deck of 52 cards. It uses a Venn diagram to illustrate the concept of overlapping events and how to calculate the combined probability. Key definitions include "equally likely events" and "overlapping events". https://cdn.kastatic.org/ka-youtube-converted/obZzOq_wSCg.mp4/obZzOq_wSCg.mp4 602 Probability calculations https://www.khanacademy.org/math/precalculus/x9e81a4f98389efdf:prob-comb/x9e81a4f98389efdf:addition-rule-prob-precalc/v/addition-rule-for-probability 2021-07-01T17:39:46Z Addition rule for probability Venn diagrams and the addition rule for probability Sal Khan video https://cdn.kastatic.org/googleusercontent/Bf6MZCeyotuvNzQ7zcv1XGuUDq3NjdIaP_dLZudyn_q7YhjU8t-GoNKQM_dtArCQk9WHBF6jU1uz_9bhYhbkKF8XnQ Addition rule for probability Venn diagrams and the addition rule for probability https://cdn.kastatic.org/ka-youtube-converted/QE2uR6Z-NcU.mp4/QE2uR6Z-NcU.mp4 643 Probability calculations https://www.khanacademy.org/math/precalculus/x9e81a4f98389efdf:prob-comb/x9e81a4f98389efdf:addition-rule-prob-precalc/a/addition-rule-for-probability-basic 2026-03-06T16:30:33.181933133Z Addition rule for probability (basic) article https://www.khanacademy.org/math/precalculus/x9e81a4f98389efdf:prob-comb/x9e81a4f98389efdf:addition-rule-prob-precalc/e/two-way-tables-venn-diagrams-probability 2026-05-05T18:10:50.367167117Z Two-way tables, Venn diagrams, and probability Practice using the addition rule in two-way tables and Venn diagrams to calculate probabilities. Jeff Dodds exercise