00:01
Okay, let's have a look at this first.
00:03
If we have, for example, let's do it down here, two sets, p and q, and i want to work out p back slash q.
00:16
And what's that mean? what it means is elements are in p but not in q.
00:22
So this area here is p backslash q.
00:27
You're in p but not in q.
00:31
Have q backslash p then is the area here on the right.
00:37
You're in q but not in p.
00:41
So knowing that up to here i want to work out.
00:45
Now here is a misprint in the question.
00:49
This symbol here should be union, not that weird e they put there.
00:55
So what we have is our union c backslash a.
01:02
Now r union c i can work out...