01选择题4★☆☆☆☆
已知集合 M={x2x1>5}M = \{x \mid 2x - 1 > 5\}, N={1,2,3}N = \{1, 2, 3\}, 则 MN=M \cap N = ( )
A.
{1,2,3}\{1, 2, 3\}
B.
{2,3}\{2, 3\}
C.
{3}\{3\}
D.
\varnothing
答案与解析

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