Question

What do you mean by set ? write it's advantage and disadvantage ?​

Answer 1

Answer:

thanks for free points

Answer 2

A set is a gathering together into a whole of definite, distinct objects of our perception [Anschauung] or of our thought—which are called elements of the set. Sets are conventionally denoted with capital letters. Sets A and B are equal if and only if they have precisely the same elements