【題組】6. Suppose A is a set with 21 elements. How many subsets of A can be obtained such that eachsubs
問題詳情
【題組】6. Suppose A is a set with 21 elements. How many subsets of A can be obtained such that eachsubset has 11 or more elements? (A) 131072; (B) 262144; (C) 524288; (D) 1048576.