题目内容
设集合A={5,log2(a+3)},集合B={a,b},若A∩B={2},则A∪B=________.
设集合A={5,log2(a+3)},集合B={a,b},若A∩B={2},则A∪B等于
{2,5,7}
{-1,2,5}
{1,2,5}
{-7,2,5}
设集合A={5,log2(a+3)},B={a,b},若A∩B={1},则A∪B=________.
设集合A={5,log2(a+3)},集合B={a,b},若A∩B={2},则A∪B=________.
设集合A={5,log2(a+3)},集合B={a,b},若A∩B={2},则A∪B= .