Let set ` A = { 1, 2, 3, ….., 22} ` . Set B is a subset of A and B has exactly 11 elements, find the sum of elements of all possible subsets B .

If set A has 3 elements and set B has 6 elements,then the number of elements in A uu B?

Set A has 5 eleements and set B has 3 elements. Find the number of relations from set A to B.

A set has 4 elements,then total number of subsets is:

If A is a finite set containing n elements then find the number of subsets of A.

Let S={1,2,3, . . .,n} . If X denotes the set of all subsets of S containing exactly two elements, then the value of sum_(A in X) (min. A) is given by

If a Set-A have 12 elements,then the number of subsets of A having atleast 3 elements is :

If the set A has 3 elements and the set B={3,4,5} ,then find the number of elements in (A xx B)