Example 3 iv

Example 3 iv A) • , — 23 and DO n — (iii) n (B —A) We know that

Hi, 
For 4th we need second and third part, 

Now here for part - 4th, language is little bit unclear but what I can make it is we have to find the number of elements that are in exactly one of A and B 
means sum of part 2 and 3 because they are only A and only B 
= 15+21 = 36 
and in terms of venn diagram they will be 

Here the coloured  portion is the asked question 
 

  • 0
What are you looking for?