Question

differance between open bracket & close bracket.

Answer 1

Answer:

An open interval does not include its endpoints, and is indicated with parentheses. For example, (0,1) means greater than 0 and less than 1. A closed interval is an interval which includes all its limit points, and is denoted with square brackets.

Answer 2

if something is written in open brackets then this means that it not be included

if something is written in closed brackets then this means that including that thing

ex - (1,2)

means no.s between 1 and 2 excluding 1 and 2

ex -[1,2]

means no.s between 1 and 2 including 1 and 2