This is the first of many proofs of this result. By proper subsets I assume we would exclude the empty set. Set Theory Set Operations Commutative Laws And Its Proof Youtube Commutative Law Commutative Set Operations Suppose the number of elements in the set is n. . The number of subsets is always 2n where n is the number of elements in the set. 29-1511 text subsets 2 9 1 511 subsets. And there were 8 elements in the set. Hence the fundamental multiplicative counting principle implies that. What is Improper Subset. S1 - 00. 6 How many subsets are in a set. If a set has 4 elements write how many subsets does it can have. If the number of elements in a set is 4 find the number of subsets and proper subsets. Answer by rapaljer 4671 Show Source. Ofn elements has. Elements in set A are 4. Or 42 if to add the empty subset. How many proper subsets does a set with four elements hav...