How do I check whether $F=\{\{a,b\},c\}$ is a partition of $E=\{a,b,c\}$?
2026-03-27 09:15:41.1774602941
Sets question partitions
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You compare it with the definition of partition. Is it a set of subsets of $E$? No: $c$ is an element of $E$, not a subset. Therefore $F$ cannot be a partition of $E$.