试题与答案

集合A={x|y=lg(x-1)},集合B={y|y=x2+2x+5},则A∩C

题型:选择题

题目:

集合A={x|y=lg(x-1)},集合B={y|y=
x2+2x+5
},则A∩CRB=(  )
A.[1,2)B.[1,2]C.(1,2)D.(1,2]

答案:

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