从0,1,2,3,4,5,6,7,8,9十个数字中,选出一个偶数和三个奇数,组成一个没有重复数字的四位数,这样的四位数共有

A.1 480个            B.1 440个                 C.1 200个              D.1 140个

 记集合T= {0,1,2,3,4,5,6,7,8,9} ,

M=,将M中的元素按从大到小排列，则第2012个数是

A.       B.

 C.       D.

 

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

(A){5,8}      (B){7,9}         (C){0,1,3}       (D){2,4,6}

 

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

(A){5,8}      (B){7,9}         (C){0,1,3}       (D){2,4,6}