Question

the no. of subsets of a set containing n elements​

Answer 1

straight forward formula:2^n subsets

Answer 2

Answer:

Hlo mate here's your answer

The number of subsets of a set containing n elements is $\sf {2}^{n}$

1). For a set A ={2} , which contains one element The subsets are Φ, {2}

i.e., For a subset of one element there are 2 or $\sf {2}^{1}$ subsets .

2). For a set B = {x , y} which contains two elements The subsets are Φ, {x} , {y} , {x , y}.

i.e., For a set of two elements there are 4 or $\sf {2}^{2}$ sunsets

Hence, it is proved....