The number of proper subsets of set A are?
When A= {1,3,5,7}
For any set with n elements, there are 2^n subsets. But A is not a proper subset of itself, nor is Ø, so that leaves just 2^4-2 = 14.
By the way, "the number" is singular, not plural.
To find the number of proper subsets of a set, you need to consider all possible combinations of its elements excluding the empty set and the set itself.
In this case, the set A = {1, 3, 5, 7} has four elements.
To find the number of proper subsets, you can use the formula 2^n - 2, where n is the number of elements in the set.
So, the number of proper subsets of set A = 2^4 - 2 = 16 - 2 = 14.
Thus, there are 14 proper subsets of set A = {1, 3, 5, 7}.