https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-probability-statistics/cc-7th-compound-events/v/tree-diagram-to-count-outcomes 2021-04-13T21:46:09Z Count outcomes using tree diagram Tree diagrams display all the possible outcomes of an event. Each branch in a tree diagram represents a possible outcome. Tree diagrams can be used to find the number of possible outcomes and calculate the probability of possible outcomes. Sal Khan video https://cdn.kastatic.org/googleusercontent/OkC8Hp3-hOywvFlE6fRGr3GA2dMtlsOLlm1wYQrnsC5uSwh-gXJ0WAppWt7rtdX7W7vr0eXLg0PnsFNp4hF4QJE8 Count outcomes using tree diagram Tree diagrams display all the possible outcomes of an event. Each branch in a tree diagram represents a possible outcome. Tree diagrams can be used to find the number of possible outcomes and calculate the probability of possible outcomes. https://cdn.kastatic.org/ka-youtube-converted/Zxvc6iPKdec.mp4/Zxvc6iPKdec.mp4 271 Permutations and Combinations https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-probability-statistics/cc-7th-compound-events/v/counting-pot-and-flower-scenarios 2021-04-13T21:46:07Z Counting outcomes: flower pots Find the number of ways you can put four types of flowers into three types of pots. video https://cdn.kastatic.org/googleusercontent/E8kuZOlcOF2O-uAoeNGniglv24N_omLWgGCvRMtSW4TNqovTD34NXywf_HexYurCb5sFDfuaywnNQLlJdmi6dsgN Counting outcomes: flower pots Find the number of ways you can put four types of flowers into three types of pots. https://cdn.kastatic.org/ka-youtube-converted/B_vAlneziHo.mp4/B_vAlneziHo.mp4 155 Permutations and Combinations https://www.khanacademy.org/math/precalculus/x9e81a4f98389efdf:prob-comb/x9e81a4f98389efdf:combinatorics-precalc/v/zero-factorial-or-0 2023-07-14T23:21:51.065682509Z Zero factorial or 0! Learn all about factorials! Factorials are a quick way to represent multiplying a number by all the smaller positive integers down to one. This video also shows why mathematicians have defined zero factorial as one, instead of zero, to make the formula for permutations work in all cases. video https://cdn.kastatic.org/googleusercontent/551b4yt_sMgyYwGuhp8J9GEQX44ijXOkRY982HD7c9PGl290XYqR9G8Tvns3jvxSW_ATwi1k_XsB9sAfWcXI9JV7 Zero factorial or 0! Learn all about factorials! Factorials are a quick way to represent multiplying a number by all the smaller positive integers down to one. This video also shows why mathematicians have defined zero factorial as one, instead of zero, to make the formula for permutations work in all cases. https://cdn.kastatic.org/ka-youtube-converted/HGoZfzz6dU0.mp4/HGoZfzz6dU0.mp4 290 Permutations and Combinations https://www.khanacademy.org/math/precalculus/x9e81a4f98389efdf:prob-comb/x9e81a4f98389efdf:combinatorics-precalc/v/permutations-and-combinations-1 2021-07-01T17:39:51Z Ways to arrange colors Thinking about how many ways you can pick four colors from a group of 6 Sal Khan video https://cdn.kastatic.org/googleusercontent/L9bqo-HYdFDVwlERLP4mEZlCfJq_PsJSEWWNDejf8pC8bTON5nZf53UmAohI_zb-zpJfAZCk-Cm_VDKwMi6hI5M Ways to arrange colors Thinking about how many ways you can pick four colors from a group of 6 https://cdn.kastatic.org/ka-youtube-converted/oQpKtm5TtxU.mp4/oQpKtm5TtxU.mp4 225 Permutations and Combinations https://www.khanacademy.org/math/precalculus/x9e81a4f98389efdf:prob-comb/x9e81a4f98389efdf:combinatorics-precalc/v/permutations-and-combinations-2 2021-07-01T17:39:51Z Ways to pick officers How many ways can we pick officers for our organization? Sal Khan video https://cdn.kastatic.org/googleusercontent/_Envat47KoVSql1K2ngT64pgsf367ENom3xPrLrpR9D1lRsKhMrJ99gehpcH2vlK8vYqUlL0X05lHpPwyQlx58NP Ways to pick officers How many ways can we pick officers for our organization? https://cdn.kastatic.org/ka-youtube-converted/v9NLtiVt3XY.mp4/v9NLtiVt3XY.mp4 139 Permutations and Combinations https://www.khanacademy.org/math/precalculus/x9e81a4f98389efdf:prob-comb/x9e81a4f98389efdf:combinations/v/combination-formula 2023-07-14T23:21:51.065682509Z Combination formula Learn the difference between permutations and combinations, and how to calculate them using factorials. This video also discusses binomial coefficients and the formula for combinations, nCk. Solidify your understanding with an example: how would one seat six people in four chairs? video https://cdn.kastatic.org/googleusercontent/ftKa0AdfJh2MX9W8r-5G9Prn5vRKWNxxTTHbf9s8YIub47ow3suCb1gqLihE0ELp4DVypHGwQrORrUHe3xwakMOk Combination formula Learn the difference between permutations and combinations, and how to calculate them using factorials. This video also discusses binomial coefficients and the formula for combinations, nCk. Solidify your understanding with an example: how would one seat six people in four chairs? https://cdn.kastatic.org/ka-youtube-converted/p8vIcmr_Pqo.mp4/p8vIcmr_Pqo.mp4 677 Permutations and Combinations https://www.khanacademy.org/math/precalculus/x9e81a4f98389efdf:prob-comb/x9e81a4f98389efdf:combinations/v/handshaking-combinations 2021-07-01T17:39:51Z Handshaking combinations Sal figures out how different combinations of people can shake hands. video https://cdn.kastatic.org/googleusercontent/XilrYJHItOV5HiVhBUXeIQyUn-8sqpXuhp3MQpb2Kk_nR2IdUYED8v-fiQC5e2i3GCyzWhX2qfnLu1itLm8JYAdX Handshaking combinations Sal figures out how different combinations of people can shake hands. https://cdn.kastatic.org/ka-youtube-converted/boH4l1SgJbM.mp4/boH4l1SgJbM.mp4 449 Permutations and Combinations https://www.khanacademy.org/math/ka-revision-class-11-math/x64e5efbb29d87707:week-2-revision-ncert-class-11-math/x64e5efbb29d87707:permutations-and-combinations-revision-ncert-class-11-math/e/revision-permutations-and-combinations-ncert-class-11-math 2025-01-22T10:49:48.897158697Z Revision Permutations and Combinations Practice problems for revision of Permutations and Combinations. Satya Swaroop exercise