A market research organization claims that, among 500 shoppers interviewed, 308 regularly buy Product X, 266 regularly

Question:

A market research organization claims that, among 500 shoppers interviewed, 308 regularly buy Product X, 266 regularly buy Product Y, 103 regularly buy both, And 59 buy neither on a regular basis. Using a Venn diagram And filling in the number of shoppers associated with the various regions, check whether the results of this study should be questioned.