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Câu 21:

Cho $A = \left\{ {0;2;4;6} \right\}$

Câu 21: Cho A={0;2;4;6}A = \left\{ {0;2;4;6} \right\}A={0;2;4;6}. Tập A có bao nhiêu phần tử?

Thông tin câu hỏi

Câu 21:

Cho $A = \left\{ {0;2;4;6} \right\}$ . Tập A có bao nhiêu phần tử?