- #1
Ascleipus
- 21
- 0
Homework Statement
The universal set u=40
Set A = 20
Set B=17
n(A∩B) = 1/2n(A'∩B')
What is the value of n(A∩B)?
Homework Equations
none^^
The Attempt at a Solution
The first thing I thought was that because Set A and Set B add up to 37 there must be 3 remaining outside the two sets, and since n(A'∩B') = everything outside the 2 sets n(A'∩B') = 3 and since n(A∩B) = 1/2n(A'∩B') then n(A∩B) = 1.5 but a set can't have 0.5 of an element, and as such I am stuck, please help me solve this :)
Cheers
Last edited: