\( \definecolor{colordef}{RGB}{249,49,84} \definecolor{colorprop}{RGB}{18,102,241} \)
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\(\{1, 2, 3\} \cap \{2, 3, 4\} =\)
\(\{1, 2, 3, 4\}\)
\(\{2, 3\}\)
\(\{2\}\)
\(\{1, 2, 3\}\)
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