In a group of 85 people, 33 own a microwave, 28 own a DVD player and 38 own a computer. In addition, 6 people own both a microwave and a DVD player, 9 own both a DVD player and a computer, 7 own both a computer and a microwave and 2 people own all 3 items.
Draw a Venn diagram. If a person is chosen at random from the group, what is the probability that the person does not own a microwave, a computer or a DVD player?