已知集合A={2,3},B={1,a},若A∩B={2},则A∪B=______.
题型:填空题难度:一般来源:不详
已知集合A={2,3},B={1,a},若A∩B={2},则A∪B=______. |
答案
∵A∩B={2} ∴a=2, ∴A={3,2},B={1,2} ∴A∪B={1,2,3} 故答案为:{1,2,3} |
举一反三
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