找考题网-背景图
单项选择题

A.512个B.498个C.256个D.128个已知集合X满足1,2 X 1,2,3,4,5,6,7,8,9,……

已知集合X满足1,2
X
1,2,3,4,5,6,7,8,9,10,那么这样的集合X有()



A.512个
B.498个
C.256个
D.128个