00:04
Alright, so in this question we are given that a is the set consists of the following.
00:14
A, b, c, d, e, f g, j, j, k, l, m, p.
00:42
It's the important that we write the bracket right.
00:49
Okay, so for about a, we want to list all elements of a.
00:54
So the solution, element of a, are, so the element of a is every element inside the main bracket.
01:11
The main bracket is here that are separated by the comma.
01:22
So element of eza, ab, c, d, e, f, g, and j, k, l, m, and p.
01:49
So a, essentially, a has four elements, and each element of a is a set.
02:00
So for part b, we need to clarify, so by the listing above, we know that the number of element of a is 4.
02:12
So a has catenarity 4.
02:15
So let's see the power set of a.
02:21
So the power set of a is the set of all subset of a.
02:30
So the power of set of a, we can write it as a is, so the set of o subset of a.
02:38
So the first thing is the empty one.
02:41
Second is the a itself...