Question

Last math problem, need help need to find all 6 Regions

Answer 1

To find the elements in region I, we need to find the cardinalities of regions II and IV first.
Can you do that ?

Answer 2

I believe it's 6

Answer 3

For which region ?

Answer 4

1

Answer 5

I got a slightly different result. Here's my reasoning:
n(A^B)=13 so n(II)=13-4=9
n(A^C)=7 so n(IV)=7-4=3
n(I) = n(A) - n(II) - n(IV) - n(V) = 23 - 16 = 7

Answer 6

I posted the wrong question. here it is

Answer 7

For this one :
n(A^B)=12 so n(II)=12-4=8
n(A^C)=10 so n(IV)=10-4=6
n(I) = n(A) - n(II) - n(IV) - n(V) = 23 - 18 = 5