EM-1249

Union and intersection

E Math · Secondary 3 · Medium · Union and intersection

1. $\{3,6,9,12,15,18\}$
2. $\{4,8,12,16,20\}$
3. $\{12\}$
4. $\{3,4,6,8,9,12,15,16,18,20\}$

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