Let $A = \{1, 2, 3, 4\}$ and $B = \{3, 1, 4, 2\}$. Which statement is true?
A$A \subset B$ but $A \ne B$
B$B \subset A$ but $A \ne B$
C$A = B$
D$A$ and $B$ are disjoint
Answer & Solution
Correct answer: C. $A = B$
In a set, the **order** of elements doesn't matter. Both sets have exactly the same four elements, so $A = B$.
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