Question

Suppose that in a senior college class of 500 students, it is found that 199 smoke, 244 drink alcoholic​ beverages, 204 eat between​ meals, 108 smoke and drink alcoholic​ beverages, 70 eat between meals and drink alcoholic​ beverages, 82 smoke and eat between​ meals, and 38 engage in all three of these bad health practices. If a member of this senior class is selected at​ random, find the probability that the student​ (a) smokes but does not drink alcoholic​ beverages; (b) eats between meals and drinks alcoholic beverages but does not​ smoke; (c) neither smokes nor eats between meals.

Answer 1

Answer edited please upvote.

Sorry i had understand this as conditional probability so got different answer