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/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/cc-eighth-grade-math/cc-8th-data/two-way-tables/v/two-way-frequency-tables-and-venn-diagrams 2023-05-12T21:01:01.897246564Z Two-way frequency tables and Venn diagrams Sometimes data belongs to more than one category. For example, candies might have chocolate, coconut, both, or neither. We can use Venn diagrams and two-way tables. Venn diagrams show sets and their overlaps. Two-way tables organize data in rows and columns. Both methods help show relationships between categories. video https://cdn.kastatic.org/googleusercontent/5-nYxcy8oey3CjUjKCQsbWWgSxm4wzvRQEWmBcgx9YhWV-MZDGKj81xcWxfZxlaTUpxWWGnBl2Zzl1OtW4mgXcA2lA Two-way frequency tables and Venn diagrams Sometimes data belongs to more than one category. For example, candies might have chocolate, coconut, both, or neither. We can use Venn diagrams and two-way tables. Venn diagrams show sets and their overlaps. Two-way tables organize data in rows and columns. Both methods help show relationships between categories. https://cdn.kastatic.org/ka-youtube-converted/l5MrtV7ZN88.mp4/l5MrtV7ZN88.mp4 383 Sets https://www.khanacademy.org/math/7th-grade-matatag/x065dcf1640354e81:2nd-quarter/x065dcf1640354e81:sets/e/sets-1-1 2026-06-18T06:53:51.747717491Z Sets 1.1 Sets ashish exercise https://www.khanacademy.org/math/7th-grade-matatag/x065dcf1640354e81:2nd-quarter/x065dcf1640354e81:sets/e/sets-1-4 2026-04-07T22:23:57.656416987Z Sets 1.4 Sets ashish exercise https://www.khanacademy.org/math/ka-math-class-11/x0419e5b3b578592a:sets-ncert-new/x0419e5b3b578592a:untitled-1198/e/subsets 2026-06-18T06:32:40.815762684Z Subsets find whether A is a subset of B or not? srijan exercise https://www.khanacademy.org/math/ka-math-class-11/x0419e5b3b578592a:sets-ncert-new/x0419e5b3b578592a:untitled-1198/e/elements-and-subsets 2026-04-30T11:00:49.215513132Z Elements and subsets Be able to differentiate between elements and subsets of a set. srijan exercise