Answer:
If n is the number of elements in the set then no. of subsets possible for this subset is 2 raise to the power of n.
Step-by-step explanation:
ex. {1,2} n=2
subsets = 2^2 = 4 = ϕ, {1}, {2}, {1,2}
every set is a subject of itself i.e {1,2}
and ϕ is a subset of every set
