Sets
... Proper subset: A ⊂ B – If A is a subset of B and there is at least one element of B that is not contained in A, the A is a proper subset of B. How to find the number of subsets: If a set contains n elements, then if contains 2n subsets. How to find the number of proper subsets: If a set contains n e ...
... Proper subset: A ⊂ B – If A is a subset of B and there is at least one element of B that is not contained in A, the A is a proper subset of B. How to find the number of subsets: If a set contains n elements, then if contains 2n subsets. How to find the number of proper subsets: If a set contains n e ...