问题
选择题
已知全集U={0,1,2,3,4,5,6,7,8,9},集合A={0,1,3,5,8},集合B={2,4,5,6,8},则(∁UA)∩(∁UB)等于( )
(A){5,8} (B){7,9}
(C){0,1,3} (D){2,4,6}
答案
答案：B
∁UA={2,4,6,7,9},∁UB={0,1,3,7,9},
(∁UA)∩(∁UB)={7,9}.故选B.
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