扫描二维码，直接登录
题库 / GMATAdvanced-DS-1
The cardinality of a finite set is the number of elements in the set. What is the cardinality of setA?
(1)2 is the cardinality of exactly 6 subsets of set A.
(2)Set A has a total of 16 subsets,including the empty set and set A itself.
Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
EACH statement ALONE is sufficient.
Statements (1) and (2) TOGETHER are NOT sufficient.
还没有题目讲解（毕出老师会陆续发布对官方考题的解读，请保持关注）。
集合子集的个数=2^n，包含集合本身和空集。n等于元素的个数，一个集合中，任何两个元素都认为是不相同的，即每个元素只能出现一次。排列组合，从有n个元素的集合中抽出m个元素，构成子集数为C(m,n)
（1）：C(n,2)=6, 所以n=4
（2）：2^n=16, 所以n=4
登录 或 注册 后可以参加讨论