1. Problem statement: The user asked: 'where are the set from the above?' 2. Interpretation: I cannot see the 'above' reference without the preceding problem or expression. 3. Common ways sets are written and how to spot them: - Listed elements example: $A = \{1,2,3\}$. - Set-builder example: $B = \{x \in \mathbb{R} : x^2 < 4\}$. - Interval example: $C = (0,1]$. - Venn diagram or table: look for labels like $A$, $B$ near regions. 4. Rules and formula used for identifying sets: look for braces \{\} for element lists, the colon or vertical bar for set-builder, interval brackets for real intervals, and explicit element listings. 5. How you can give the missing context so I can answer: - Paste the exact expression, equation, or list that appears above. - If it's an image, describe the labeled regions, or upload the image. - State whether you want the set's elements, its description, or whether to find a subset. 6. Final answer: I cannot determine the set from the text alone; please provide the preceding expression or image and I will identify the set and show all work.