1. If you love eating sweets, you'll develop cavities. But, since you didn't develop cavities, you must not love eating sweets.

3. If I drink coffee, I stay awake. I didn't have any, so I fell asleep.

4. If he pages me, he needs a ride to school. He hasn't paged me yet, so he doesn't need a ride to school.

5. All SJSU students drive to school, because all SJSU students own cars, and anyone who owns a car drives it to school.

6. If people guilty of a crime go to jail and John went to jail, then it is obvious that he committed a crime.

7. I said I'd go out tonight only if it's your birthday, and I didn't go out. What can you conclude?

8. If you want to lose weight, you have to exercise or eat less. Joe couldn't eat less. Can he lose weight?

9. If more than half of the people of Quebec voted to secede from Canada, then Quebec would become an independent country. But only 49.5% voted to secede, so Quebec will remain a part of Canada.

10. The CHP gave tickets to everyone who was speeding. I got a ticket, so I guess I was speeding.

11. All nice people are saints, but some do-gooders are not nice. So some do-gooders are not saints.

12. All men are jerks. Since women aren't men, they aren't jerks.

13. Some bike frames are made of aluminum, and aluminum is light, so some bike frames are light.

14. Some comfortable shoes are expensive, and for my feet to be happy, they need comfortable shoes. As a result, it's expensive to keep my feet happy.

15. All athletes are healthy, but sick people are not, so sick people are not athletes.

16. Not all students are hard-working, yet most students are passing their courses. That means that some students who are not hard-working are passing their courses.

17. If two-thirds of the House votes for a bill, it will pass. But only half of the House voted for this bill. Did it pass?

18. If I answered three out of the four questions right on the exam, I would have passed. But I only answered two of them right, so I must have failed it.

19. Proposition 215 legalizes marijuana use for all cancer patients. Some children are cancer patients. Therefore, it will be legal for some children to use marijuana.

20. If less than 15 students enroll for a class, then the class is canceled. My zoology class was not canceled, so more than 15 students must have enrolled for it.

21. Good actors have instinctual talent, but models have no talent of any kind! Therefore, models are never good actors.

22. No one I know is passing Critical Thinking. Mr. Smith is passing Critical Thinking, so I must not know him.

23. Many students like rock music, but old people do not, so old people must not be students.

24. Good football players are big, but some of the Spartan football players are not big, so they must not be that good.

25. Some doctors do not like to watch television. Jessica is a doctor. So Jessica must not like to watch television.

26. Pioneer High has kicked out some of its worst students. I'm not that bad, so I didn't get kicked out.

27. All snobbish girls are waste my time, but some girls aren't snobbish, so they must not waste my time.

28. No strawberries are green, but some grapes are. So some grapes are not strawberries.

29. Cherries are red, but some apples are not. So cherries aren't apples.

30. Some apples are green so, since all green apples are sour, some apples are sour.

31. Many motorcycles are loud. Harleys are loud, so Harleys must be motorcycles.

32. All long-hired cats are cute, but some cats are short-haired, so some cats are not cute.

33. Some long books are hard to understand. War and Peace is a long book, so it must be hard to understand.

34. Some alcoholics should not become cops because they are irresponsible, and irresponsible people shouldn't be cops.

35. Many college student work to earn money, but some students don't work. Those who don't, don't earn any money.

36. If Sam goes to the movies, she can't go to the party. But she went to the party, so she must not have gone to the movies.

37. Mary cannot play sports if she is not feeling well. But she's playing, so I guess she feels fine.

38. Goran will be in London on the 23rd if he leaves L.A. by the 20th. But he wasn't in London on the 23rd, so he must not have left L.A. by the 20th.

39. If he can prescribe medicine, then he is a psychiatrist. But he's not a psychiatrist, so he can't prescribe medicine.

40. If I go to sleep after 1:00 am, then I wake up late. And when I wake up late, I skip breakfast. And if I skip breakfast, I feel groggy all day. Well, I do feel groggy. So, I must have skipped breakfast, woken up late, and gone to bed after 1:00.

41. If it's not raining, then I can play soccer. But right now I can't play soccer, so it must be raining.

42. If it's raining, my car gets wet. My car got wet, so it must have rained.

43. If you wear green on St. Patrick's Day, you won't get pinched. So, since you got pinched, you must not have been wearing green.

44.. If I turn in all my assignments, then I will pass the course. But I've missed two assignments. So I'm going to fail the course!

45. If I eat all the menudo, I will be too full and won't be able to sleep. If I don't get to sleep, I won't wake up for school on time. And, since I ate all the menudo, I am too full to fall asleep and I won't be able to make it to my class tomorrow.

46. If she leaves, then she didn't stay. But she didn't leave, so she must have stayed.

47. If I get to sleep early, then I'm not tired the next day. And I wasn't tired today, so I must have gotten to sleep early last night.

48. If I'd done my assignments earlier, I'd have some time free now. But I didn't, so I don't.

49. Because he's stupid, Jake doesn't do his homework. You don't do your homework, so you must be stupid.

50. If I'd worn a sweater today, I'd stay warm. But I forgot to wear my sweater, so I'll probably be cold.

51. If chocolate causes pimples, and all teenagers eat chocolate, then all teenagers have pimples.

52. I only enjoy reading romance novels. Since Stephen King writes horror novels, I won't enjoy reading his novels.

53. Only residents with a maximum of 2 dogs or 2 cats are obeying the law. Sam has 6 cats, so Sam in not obeying the law.

54. If school ends by 5:00 pm, or the traffic is light, I get home before it gets dark. School ended at 6:00 pm today, but there was no traffic. So I should make it home before dark.

55. Only mistreated animals are aloof and unfriendly. My cats have been treated very well, so they must be neither aloof nor unfriendly.

56. Whenever I don't study for my Psychology exams, I don't pass. I studied for this Psychology exam. Will I pass?

57. Some of my classes suck or I just never go to them, and critical thinking is the one of the classes I never go to, so it must totally suck.

58. The best teams make it to the playoffs, and only two of the playoff teams make it to the Super Bowl, so those two must be the best.

59. Only some university courses are worth the price of their tuition, and no one should have to take a course that isn't worth paying for, so no one should have to take some university courses.

60. Well-trained dogs tend to be either vicious or friendly, and even some friendly dogs do not make good pets, so some well-trained dogs do not make good pets.