https://www.khanacademy.org/math/statistics-probability/probability-library/basic-set-ops/v/subset-strict-subset-and-superset 2022-11-16T04:22:43.7414897Z Subset, strict subset, and superset A subset of a set A is any set B such that every element of B is also an element of A. A strict subset is a subset that isn't equal to the original set (i.e. B must have at least one fewer element than A). A superset of A is any set C such that A is a subset of C. Sal Khan video https://cdn.kastatic.org/googleusercontent/wMdqgxVfRi4_taIqw28njj_O9258cetOZKIsuetWCd4m_vmBb_UlLmW5br_IY3B3JgRDNaUdeReh0uWFprHFSkje Subset, strict subset, and superset A subset of a set A is any set B such that every element of B is also an element of A. A strict subset is a subset that isn't equal to the original set (i.e. B must have at least one fewer element than A). A superset of A is any set C such that A is a subset of C. https://cdn.kastatic.org/ka-youtube-converted/1wsF9GpGd00.mp4/1wsF9GpGd00.mp4 272 Sets https://www.khanacademy.org/math/statistics-probability/probability-library/basic-set-ops/v/universal-set-and-absolute-complement 2020-08-28T01:50:16Z Universal set and absolute complement Sal moves onto more challenging set ideas and notation like the universal set and absolute complement. Sal Khan video https://cdn.kastatic.org/googleusercontent/6ym_pvD9mJrd__6socmM6IZmLUmPHwsU8914fwZ991B-CghNjgixT9cSSiYONKTjU6fg_2MZZ-RFUCw8DnV2w00tBw Universal set and absolute complement Sal moves onto more challenging set ideas and notation like the universal set and absolute complement. https://cdn.kastatic.org/ka-youtube-converted/GVZUpOm3XUg.mp4/GVZUpOm3XUg.mp4 386 Sets https://www.khanacademy.org/math/statistics-probability/probability-library/basic-set-ops/v/intersection-and-union-of-sets 2022-11-16T04:22:43.7414897Z Intersection and union of sets To find the intersection of two or more sets, you look for elements that are contained in all of the sets. To find the union of two or more sets, you combine all the elements from each set together, making sure to remove any duplicates. Sal Khan video https://cdn.kastatic.org/googleusercontent/ZfvKdb7vypXiNcij1V-Z29OBpfTVLyDuiwSWZHAIfnaq5tEsVTIH2McPYR3Yk99irAFa4WxruGFjYY7DOAiXcqun Intersection and union of sets To find the intersection of two or more sets, you look for elements that are contained in all of the sets. To find the union of two or more sets, you combine all the elements from each set together, making sure to remove any duplicates. https://cdn.kastatic.org/ka-youtube-converted/jAfNg3ylZAI.mp4/jAfNg3ylZAI.mp4 464 Sets https://www.khanacademy.org/math/statistics-probability/probability-library/basic-set-ops/v/relative-complement-or-difference-between-sets 2020-08-28T01:50:22Z Relative complement or difference between sets Sal shows an example finding the relative complement or difference of two sets A and B. Sal Khan video https://cdn.kastatic.org/googleusercontent/hvlYkcIS0gb4u33eAiGNKYaSSL0WfaLKbHBUOdgg6QkPZu2ltHi_MrlofJ2jKMZhlAPQISdfDjWECGfnU7JcbEjU Relative complement or difference between sets Sal shows an example finding the relative complement or difference of two sets A and B. https://cdn.kastatic.org/ka-youtube-converted/2B4EBvVvf9w.mp4/2B4EBvVvf9w.mp4 375 Sets https://www.khanacademy.org/math/statistics-probability/probability-library/basic-set-ops/v/bringing-the-set-operations-together 2020-08-28T01:50:19Z Bringing the set operations together Sal summarizes the set operations that he has discussed in the previous videos. Sal Khan video https://cdn.kastatic.org/googleusercontent/nvhBNWvfV-qwy6a0wBv1LDUC2Mdg0GZRhHgTp6EJSEvcViUIrKK2M_kT4ZWD2s_YMptdNCjQM-Tq1R-_oAfqH78 Bringing the set operations together Sal summarizes the set operations that he has discussed in the previous videos. https://cdn.kastatic.org/ka-youtube-converted/OCNXS_m1HWU.mp4/OCNXS_m1HWU.mp4 388 Sets https://www.khanacademy.org/math/ka-revision-class-11-math/x64e5efbb29d87707:week-1-revision-ncert-class-11-math/x64e5efbb29d87707:sets-revision-ncert-class-11-math/e/revision-sets-ncert-class-11-math 2026-04-07T23:36:17.218592739Z Revision Sets Practice problems for revision of Sets. Satya Swaroop exercise