Asurvey was given to 339 people asking whether people like dogs and/or cats.
190 said they like dogs
141 said they like cats
88 said they don't like cats or dogs.
how many said they liked both cats and dogs?

80.

Step-by-step explanation:

Let be the set of people who like cats and the set of people who like dogs. Under the cardinality theorem you have

n(CUD) = n(C) + n(D) - n(CnD)[/tex], isolating the ∩ , you have n∩  = n(C) + n(D) - ∪∩  

no problobm

step-by-step explanation:

1 is c

2 is a

3 is a

step-by-step explanation: