Chapter 13, Problem 5RE

To determine

To find: How many are in A or B?

Answer to Problem 5RE

34

Explanation of Solution

Given:

Calculation:

$n\left(A\right)$ or $n\left(B\right) = n\left(A{{\displaystyle \cup }}^{\text{}}B\right)$

$n\left(A{{\displaystyle \cup }}^{\text{}}B\right) = n\left(A\right) + n\left(B\right) - n\left(A{{\displaystyle \cap }}^{\text{}}B\right)$

$n\left(A{{\displaystyle \cup }}^{\text{}}B\right) = 29 + 5 + 6 + 2 - \left(6 + 2\right)$

$n\left(A{{\displaystyle \cup }}^{\text{}}B\right) = 34$