00:01
Okay, so we're starting with three sets.
00:04
A consists of small, medium, and large.
00:07
B is blue and green, and c is triangle and square.
00:11
Just to save the little time on this video, i'm going to abbreviate small for s, medium for m, and so on.
00:17
We don't have any overlap, so there shouldn't be any confusion.
00:20
I'm using the symbols, triangle, and square.
00:23
So a cross b, cross c, consists of all ordered pairs where a is from set a, b is from set a, b is from set b and c is from set c.
00:34
It is a set.
00:35
So we're going to open with our braces and then what we're going to do is you want to do this systematically.
00:40
You don't want to just start picking and choosing.
00:42
We're going to start with the first element in a and then go through all the options with the first element in b and then our options from c and then start again with the second element in b and so on.
00:57
So we get a small blue triangle and then we have a small blue square.
01:09
So that exhaust all our possibilities with small and blue.
01:14
So now we'll finish with small and do small green triangle and then small green square.
01:25
Okay, so that's everything for small...