1. Deductive vs. Inductive Reasoning
Which one is it?

2. Everything made of copper conducts electricity
Everything made of copper conducts electricity. This wire is made of copper. This wire will conduct electricity

3. DEDUCTIVE!!!

4. Tristan owns only blue pants and brown pants
Tristan owns only blue pants and brown pants. Tristan is wearing a pair of pants today. So, Tristan is wearing either blue or brown pants today.

5. DEDUCTIVE!!!

6. All sheep that I’ve seen are white. All sheep must be white.

7. INDUCTIVE!!!

8. Socrates was Greek. Most Greeks eat fish. Socrates probably ate fish.

9. The soccer game is on Thursday or Friday
The soccer game is on Thursday or Friday. I just found out that the game is not on Thursday, so the game must be on __________.

10. January has always been cold here in Siberia
January has always been cold here in Siberia. Today is January 14th, so it is going to be another cold day in Siberia.

11. The local branch of Wachovia Bank was robbed yesterday
The local branch of Wachovia Bank was robbed yesterday. Hannah needed money to pay off her gambling depts. She just bought a gun two days ago, and I saw her hanging around the bank yesterday morning. Today the bookie’s goons stopped looking for Hannah. So, Hannah robbed Wachovia Bank yesterday.

12. All turtles have shells. The animal I have captured is a turtle
All turtles have shells. The animal I have captured is a turtle. I conclude that the animal in my bag has a shell.

13. Austin: Jalen, look up. What do you see
Austin: Jalen, look up. What do you see? Jalen: I see thousands of stars. Austin: And what does that mean to you? Jalen: I guess it means we will have another nice day tomorrow. What does it mean to you? Austin: To me, it means someone has stolen our tent.

14. Photo A taken indoors without a flash did not come out
Photo A taken indoors without a flash did not come out. Photo B taken indoors without a flash did not come out. Photo C taken indoors without a flash did not come out. Photos taken indoors without a flash will not come out.

15. All 8th graders must take science. John is an 8th grader
All 8th graders must take science. John is an 8th grader. John must take science.

16. Frogs are amphibians. The coqui is a frog native to Puerto Rico
Frogs are amphibians. The coqui is a frog native to Puerto Rico. The coqui is an amphibian.

17. Murphy is a dog. All dogs can bark. Murphy can bark.

18. Young children read comic strips. Teenagers read comic strips
Young children read comic strips. Teenagers read comic strips. Adults read comic strips. Conclusion: ? Which type of reasoning?

19. Russell enjoys snow skiing. Russell enjoys ice-skating
Russell enjoys snow skiing. Russell enjoys ice-skating. Russell enjoys bobsledding. Russell enjoys ice hockey. Conclusion: ? Which type of reasoning?

20. Jesus is fluent in Spanish. Jesus speaks German like a native
Jesus is fluent in Spanish. Jesus speaks German like a native. Jesus reads French newspapers. Conclusion: ? Which type of reasoning?

21. All lawyers must pass a bar exam. Sheldon is a lawyer
All lawyers must pass a bar exam. Sheldon is a lawyer. Sheldon passed the bar exam.

22. The beach roads are jammed with traffic every Memorial Day
The beach roads are jammed with traffic every Memorial Day. The beach road are jammed with traffic every July 4th. The beach roads are jammed with traffic every Labor Day. Conclusion: ? Which type of reasoning?

23. Sydney is allergic to all foods containing wheat
Sydney is allergic to all foods containing wheat. Spaghetti contains wheat. Sydney is allergic to spaghetti.