Question: In a certain community, 40% of the households subscribe to a local newspaper, 30% subscribe to a newspaper of national circulation, and 60% subscribe to at least one of the two types of newspapers. Let E1 denote the event that a randomly chosen household subscribes to a local newspaper, and let E2 denote the corresponding event for the national newspaper.
(a) Make a Venn Diagram showing events E1 and E2 and shade the region representing the 60% of the households that subscribe to at least one of the two types of newspapers.
(b) Make a Venn Diagram showing events E1 and E2 and shade the event that a randomly selected household subscribes to both types of newspapers.
(c) Make a Venn Diagram showing events E1 and E2 and shade the event that a randomly selected household subscribes only to a local newspaper.