6. Either Laura is a good girl or Rob is a good boy. If Danny cries, then Laura is not a good girl. Rob is not a good boy. Does Danny cry?

determine whether the arguments are valid and justify your reasoning.

8.Hypotheses: if Danny is affluent, he is either a snob or a hypocrite, but not both. Danny is a snob and is not a hypocrite.

Conclusion: Danny is not affluent.

10. Hyphotheses: If john invests his money wisely, he will be rich. If john is rich, he will buy an expensive car. John bought an expensive car.

Conclusion: John invested his money wisely.