Question

There are 500 students in a high school senior class. Of these 500 students, 300 regularly wear a necklace to school, 200 regularly wear a ring, and 125 regularly wear a necklace and a ring. Using this information, answer each of the following questions.What is , the probability that a senior wears a necklace? What is the probability that a senior wears a ring? What is the probability that a senior wears a necklace and a ring? What is the probability that a senior wears a necklace or a ring?

Answer 1

The probability that a senior wears a necklace = 300/500=3/5

wears ring = 200/500=2/5

wears a necklace and a ring = 125/500=1/4