CAA: Christian Anime Alliance

confirm me on this if I'm right.

L = {2, 8} means that set L contains the numbers 2 and 8.

M = [3, 11] means that set M contains all numbers greater than and equal to 3 and less than or equal to 11.

N = (1, 5) means that the set N contains all numbers greater than 1 and less than 5


is this correct?

You are correct.

The braces {} are used to define a set of numbers.

Square brackets [] are used to notate close sequences.

Parentheses () are used to notate open sequences.

You can mix and match the square brackets and parentheses as well. [2,11) is the range of numbers between 2 and 11 - including 2, but not including 11.

thank you vey much!

You're welcome. Glad to be of service.