A= brace. 1,2,3,4,5,6 brace.
B=brace. Joy,Bernadette,Nina brace.
c=brace. banana,apple,grapes brace.
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The roster and rule method requires a lot of record keeping.
The first one is roster method or listing method. The second one is verbal description method and the third one is set builder notation.
This is a method describing a set by listing each element of the set inside the symbol {}. In listing the elements of the set, each distinct element is listed once and the order of the elements does not matter.
Oh, dude, the roster method is just a fancy way of listing out all the elements in a set by separating them with commas and putting them inside curly braces. It's like making a guest list for a party, but instead of names, you've got numbers or objects. So, yeah, it's basically just a way to show off all the cool stuff in a set without getting too formal about it.
Roster Method, for example {1, 2, 3, 4,5, 6} Set builder, for example {x:x is an element of Natural numbers, x