The set can be expressed as follows:
a. For set C of 4-digit multiples (C). C=(A∩B)∩U
b. For Set D of 4-digit multiples (B). D=(A∪B)∩U
c. For Set E of 4-digit numbers (A). E=U\(A∪B)
A set is an array of numbers, elements, numbers, shapes, items etc that fit into a particular description.
Set is a very important topic and it helps us find a way to arrange elements into their specified fields.
In conclusion, the above listed set elements are the required answers to the specified set problem
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