`A = {a,{b},c,{d,e}}`
Find the number of subset of A which contains exactly two elements.

A = {a,{b},c,{d,e}} Find the number of subset of A which contains {b} but not c.

Find the number of subsets of C which has 3 elements.

If A={1,2,3,4,5,6} , then the number of subsets of A which contain atleast two elements is

Let A={1, 2, 3, 4, 5, 6, 7, 8, 9, 10}. Then the number of subsets of A containing exactly two elements is

The number of subsets of a set containing n distinct elements is

The number of subsets of a set containing n elements is :

The number of subsets of a set containing n elements is