7. Pegasus Inc. surveyed 700 potential customers and asked whether they like to shop in a store or on-line. 325 responded that they like to shop in a store, 265 responded that they like to shop on-line, and 180 like to shop in a store and on-line. Based on this survey, find the following probabilities that a customer: a. Likes to shop in a store and on-line b. Likes to shop in a store or on-line or both c. Likes to shop on-line but not in a store d. Does not like to shop in a store nor on-line