Consider the sets A = {1,2,3,4} and B = {3,4,5,6}.Find all possible subsets of A and B count the number of subsets of A. Verify the following result.If A contains n elements , then A will have `2^n` subsets'.

Explanation

`phi`,A,{1},{2},{3},{4},
{1,2},{1,3},{1,4},{2,3},{2,4} {3,4},
{1,2,3},{1,2,4},{1,3,4},{2,3,4}