a school cafeteria makes 4 diffrent salads during the week but serves only 2 salads each day on a roating basis. salads: chicken,fruit,pasta,tuna. a student randomly chooses a day to buy a cafeteria salad without knowing wich 2 salads are being served. what is the probability the student chooses a day the cafeteria is serving chicken salad,pasta salad, or both?