Are braces are used in interval notation or roster notation?

In Mathematics, braces ( {} )are used to symbolize the group of mathematical terms, commonly as the outmost measurement in a difficult expression. Braces are used in roster notation. Wherein within the braces there are a set of elements, which are separated by commas after each element. The set may be a set of whole numbers, or a set of natural numbers, or even a set of integers. While in Interval Notations, brackets and parentheses are used to indicate, whether the endpoints are left out or contained within.

1: -2 3/4, -2 1/2, -14, 0, 3, 8 1/3

2: -4, -3, -2 1/2, -2 1/4, 3 1/4,

step-by-step explanation: