Let A={1,2,3,...,10} then the number of subsets of A containing two or three elements is?

Let A={1,2,3,...,10} then the number of subsets of A containing two or

1.	Let A={1,2,3,...,10} then the number of subsets of A containing two or three elements is?
Answer» 2^n , where n is no. Of element present in a set