00:01
Let us start with our solution.
00:01
So we have been given a venn diagram and we have been given number of elements the event a and b has that is n of a.
00:12
This means that number of elements are present in a.
00:15
So that is equal to 30.
00:18
N of b this is equal to 55.
00:21
Then n of a intersection b is equal to 25 and n of u that is universal set has 100 elements.
00:32
Now first question that they have asked is n of a intersection b.
00:38
So first of all understand what is a intersection b.
00:41
So a intersection b means the common elements that a and b has is called as a intersection b.
00:51
Common elements that a and b both.
01:04
So this is n of a intersection b.
01:08
We have already been given n of a intersection b is equal to 20.
01:14
Now let us look at our question number two.
01:17
Second part of the question is n of a intersection b dash...