A set with N elements has 2N subsets.
5 subsets of 4 and of 1, 10 subsets of 3 and of 2 adds up to 30.
That means, figure out how many different subsets a set has. In general, if a set has n elements, it has 2n different subsets.
512 subsets
Two. The set {x} has the subsets {} and {x}.
An element doesn't have subsets. Sets can have subsets.
8 subsets
Only a set can have subsets, a number cannot have subsets.
A set with N elements has 2N subsets.
5 subsets of 4 and of 1, 10 subsets of 3 and of 2 adds up to 30.
That means, figure out how many different subsets a set has. In general, if a set has n elements, it has 2n different subsets.
If the universal set contains N elements then it has 2N subsets.
512 subsets
Two. The set {x} has the subsets {} and {x}.
The empty set has only one subset: itself. It has no proper subsets.
A set with 9 elements has 2^9 = 512 subsets.
thenumber of subsets = 8formula: number of subsets =2n; wheren is thenumber of elements in the set= 2n= 23= 8The subsets of 1,2,3 are:{ }, {1}, {2}, {3}, {1,2}, {2,3}, {1,3}, {1,2,3}