Trios of Concrete Propositions, proposed as Syllogisms: to be examined.

Choose your favorite 10 to turn in. Use the method of Lewis Carrol's Logic Game to determine whether the conclusion is valid or not.

1. No doctors are enthusiastic; You are enthusiastic.     You are not a doctor.   2. Dictionaries are useful; Useful books are valuable.     Dictionaries are valuable.   3. No misers are unselfish; None but misers save egg-shells.     No unselfish people save egg-shells.   4. Some epicures are ungenerous; All my uncles are generous.     My uncles are not epicures.   5. Gold is heavy; Nothing but gold will silence him.     Nothing light will silence him.   6. Some healthy people are fat; No unhealthy people are strong.     Some fat people are not strong.   7. “I saw it in a newspaper.” “All newspapers tell lies.”     It was a lie.   8. Some cravats are not artistic; I admire anything artistic.     There are some cravats that I do not admire.   9. His songs never last an hour; A song, that lasts an hour, is tedious.     His songs are never tedious. 10. Some candles give very little light; Candles are meant to give light.     Some things, that are meant to give light, give very little.

11. All, who are anxious to learn, work hard; Some of these boys work hard.     Some of these boys are anxious to learn. 12. All lions are fierce; Some lions do not drink coffee.     Some creatures that drink coffee are not fierce. 13. No misers are generous; Some old men are ungenerous.     Some old men are misers. 14. No fossil can be crossed in love; An oyster may be crossed in love.     Oysters are not fossils. 15. All uneducated people are shallow; Students are all educated.     No students are shallow. 16. All young lambs jump; No young animals are healthy, unless they jump.     All young lambs are healthy. 17. Ill-managed business is unprofitable; Railways are never ill-managed.     All railways are profitable. 18. No Professors are ignorant; All ignorant people are vain.     No professors are vain. 19. A prudent man shuns hyænas; No banker is imprudent.     No banker fails to shun hyænas. 20. All wasps are unfriendly; No puppies are unfriendly.     Puppies are not wasps.

21. No mathematicians are honest; Some non-mathematicians are rich.     Some rich people are dishonest. 22. No idlers win fame; Some painters are not idle.     Some painters win fame. 23. No monkeys are soldiers; All monkeys are mischievous.     Some mischievous creatures are not soldiers. 24. All these bonbons are chocolate-creams; All these bonbons are delicious.     Chocolate-creams are delicious. 25. No muffins are wholesome; All buns are unwholesome.     Buns are not muffins. 26. Some unauthorised reports are false; All authorised reports are trustworthy.     Some false reports are not trustworthy. 27. Some pillows are soft; No pokers are soft.     Some pokers are not pillows. 28. Improbable stories are not easily believed; None of his stories are probable.     None of his stories are easily believed. 29. No thieves are honest; Some dishonest people are found out.     Some thieves are found out. 30. No muffins are wholesome; All puffy food is unwholesome.     All muffins are puffy.

31. No birds, except peacocks, are proud of their tails; Some birds, that are proud of their tails, cannot sing.     Some peacocks cannot sing. 32. Warmth relieves pain; Nothing, that does not relieve pain, is useful in toothache.     Warmth is useful in toothache. 33. No bankrupts are rich; Some merchants are not bankrupts.     Some merchants are rich. 34. Bores are dreaded; No bore is ever begged to prolong his visit.     No one, who is dreaded, is ever begged to prolong his visit. 35. All wise men walk on their feet; All unwise men walk on their hands.     No man walks on both. 36. No wheelbarrows are comfortable; No uncomfortable vehicles are popular.     No wheelbarrows are popular. 37. No frogs are poetical; Some ducks are unpoetical.     Some ducks are not frogs. 38. No emperors are dentists; All dentists are dreaded by children.     No emperors are dreaded by children. 39. Sugar is sweet; Salt is not sweet.     Salt is not sugar. 40. Every eagle can fly; Some pigs cannot fly.     Some pigs are not eagles.