EXERCISES
What facts or instances do you know which would lead you to believe either the following propositions or their opposites?
1. Dogs are intelligent.
2. Only excellent pupils can pass the seventh grade examination.
3. Some teachers do not ask fair questions on examination.
4. Oak trees grow to be larger than maples.
5. Strikes increase the cost to the consumer.
6. A college education pays.
7. Department stores injure the trade of smaller stores.
8. Advertising pays.