1. (5 分) 已知集合 $A=\{1,2,3,4\}, B=\{2,4,6,8\}$, 则 $A \cap B$ 中元素的个 数为 ( )
Gaokao · Math · previous-year question
- A.1
- B.2correct
- C.3
- D.4
Answer
B. 2
Explanation
解: $\because$ 集合 $A=\{1,2,3,4\}, B=\{2,4,6,8\}$, $\therefore A \cap B=\{2,4\}$ $\therefore A \cap B$ 中元素的个数为 2 . 故选: B.
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