. whats 0 +0 free points god bless u

Iam at home. /: i am playing video games. translate the following statement into symbolic form.

At a pizza shop 70% of the customers order a pizza 25% of the customers order a salad and 15% of the customers order both a pizza and a salad if s customer is chosen at random what is the probability that he or she orders either a pizza or a salad

What is ha theorem a special case of?