问题
填空题
已知全集U={1,2,3,4,5,6.7},A={2,4,6},B={1,3,5,7}.则A∩(∁UB)=______.
答案
∵全集U={1,2,3,4,5,6.7},B={1,3,5,7},
∴∁UB={2,4,6},又A={2,4,6},
则A∩(∁UB)={2,4,6}.
故答案为:{2,4,6}
已知全集U={1,2,3,4,5,6.7},A={2,4,6},B={1,3,5,7}.则A∩(∁UB)=______.
∵全集U={1,2,3,4,5,6.7},B={1,3,5,7},
∴∁UB={2,4,6},又A={2,4,6},
则A∩(∁UB)={2,4,6}.
故答案为:{2,4,6}