Below you can browse through and print any Logic Puzzle Syllogism of your choice.
LOGIC PUZZLE SYLLOGISM
The puzzles created on this page are in tribute to the grandfather of logic : Charles Lutwidge Dodgson,
who you might know better as Lewis Carroll !! (Author of the children's classic :Alice in Wonderland).
You can read more about Lewis Carroll here: (http://en.wikipedia.org/wiki/Lewis_Carroll)
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Syllogism: The art of Deductive Reasoning
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One of the main principles of logic is Deductive Reasoning (reasoning from the general to the particular).
It involves using given true premises to reach a conclusion that is also true.
If the rules of deduction are followed, this ensures we reach an accurate conclusion.
An Example:
- All people named Sally sell sea shells at the sea shore. (general)
- My Friend's name is Sally. (particular)
- Therefore, Sally sells shells at the sea shore. (a conclusion from deducing the premises of the first 2 statements)
Or, as another example consider:
- All men are mortal. (general),
- I am a man. (particular),
- Therefore, I am mortal. (deduction).
- If P --> Q.
- And Q--> R,
- Then P-->R.
Poly-Syllogism : a sequence of Syllogisms
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A string of any number of propositions forming together a sequence of syllogisms such that the conclusion of each syllogism,
together with the next proposition, is a premise for the next, and so on.
An Example:
- It is raining.---- (proposition 1)
- If we go out while it is raining we will get wet. ----
(premise: [If we go out] + proposition 1:[rain] + proposition 2:[wet]) - If we get wet, we will get cold. ---- (proposition 2(wet) + proposition 3(cold))
- Therefore, If we go out we will get cold.---- (CONCLUSION: premise + proposition3)
A sorites is a specific kind of polysyllogism in which the predicate of each proposition is the subject of the next premise.
In other words, a sorites is a heap of propositions chained together.
Example:
- All lions are big cats. ---- (proposition#1)+(proposition#2)
- All big cats are predators. ---- (proposition#2)+(proposition#3)
- All predators are carnivores. ---- (proposition#4)+(proposition#5)
- Therefore, all lions are carnivores.---- CONCLUSION:(proposition#1)+(proposition#5)
FREE ON-LINE PRINTABLE PUZZLES-PDF
On this page you are welcome to print these free samples and also download these puzzles
here( in PDF format).As always enjoy your free puzzles!!
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FREE INTERACTIVE SYLLOGISMS AND POLY-SYLLOGISMS:
PLAY HERE NOW!
Below is the new interactive section.
To activate this section of puzzles simply click on one of the interactive colored headers
(i.e. "INTERACTIVE Syllogisms: [ 1- 20]");
This will open the numbered syllogisms for that selected header.
To reveal the answers to the individual syllogisms :simply click the highlighted text below each question.
(Note: double-click will close the answer box).
INTERACTIVE Syllogisms: [ 1- 20]1. Charlie is a hustler. Charlies is GREEDY 2. No cats are immortal. Polly is MORTAL 3.All Planets revolve around the Sun. Earth must? revolve 4. All Dogs are cats. Therefore Rover is also a? CAT! 5. All green aliens drink green tea. All Robots must? DRINK GREEN TEA! 6. All spotted leopards have poor eyesight. All leopards at the zoo must HAVE POOR EYESIGHT 7. All poodles are small.. Some white poodles ARE SMALL! 8. No babies can talk intelligently. All speakers can TALK INTELLIGENTLY! 9.All verbs are adjectives. True or False? True! 10. All snails crawl. Some amphibians CRAWL! 11. No scholars are Greeks. No mortals are Greek True! 12. Some polynomials are squares. Are all equilaterals necessarily polynomials? No! 13. All musicians play the bagpipes well. True or False? False! 14. All good things must pass. True or False? True! 15. All sisters are nuns. True or False? False! 16. Some trains have whistles. True or False? TRUE! 17. Some thinking men are smart. Some people are? SMART! 18. No iron metals are heavy ? All cups are? NOT HEAVY! 19. All iron metals are heavy. Some cups must be HEAVY! 20. Socrates is Greek. Socrates is MORTAL! INTERACTIVE Syllogisms: [ 21- 40]21. Some corners have no edges. True or False? True 22. Some swords are sharp. Some epees are? Sharp 23. Sometimes people get angry. Sometimes people are Monsters 24. All Girls are always possessive. (Yes or No ?) Yes! 25. All fish have green eyes. True or False? False 26. Some people are only two feet tall. True or False? False 27.Sally only sells sea shells door-to-door. (Yes or No ?) No! 28.Sally only sells sea shells door-to-door or on the internet. (Yes or No ?) Yes! 29. Sally never sells sea shells at the seashore. (Yes or No ?) No! 30.All Flowers Wilt. Therefore Daisies will? Wilt! 31. Some burglars steal stereo’s. True or False? False 32.All heavy stereo's are never stolen. My Stereo cannot be? Stolen 33.Only fast cars are painted Red. Polly's car is Not Fast 34.Some Gingerbread men are tasty. (Yes or No ?) No! 35. Some Gingerbread men are tasty. True or False? True 36.Some Germans are named Pete. True or False? False 37.Only Germans named Pete eat Pretzels. Some Petes eat ? Pretzels! 38.All sand in the desert is hot. All sand in the Gobi is Hot! 39. All mortals are men. (True or False?) False! 40. If all car accidents are fatal, Some dogs must be? Dead! INTERACTIVE Syllogisms: [ 41- 60]41. Some monkeys are green. True or False? False 42. All sheets are made of silk. True or False? True 43. Some tamed horses are saddled. True or False? False 44. All Fans have rotating blades. True or False? False 45. All purple houses have green chimneys. True or False? True 46. Some pillows are made of feather. True or False? True 47.Some bridges are made of stone. (Yes or No ?) No! 48. All grey cats have red spots. (Yes or No ?) No! 49. All babies sometimes cry. True or False? True! 50.All cars with red wheels are model Fords. True or False? False! 51. Some paintings are displayed in a museum. True or False? True! 52. All scary ghosts are goblins. True or False? False! 53. All scary ghosts are goblins. True or False? False! 54. Some ghosts are goblins. True or False? True! 55. Some express trains always arrive early. True or False? False! 56. All express trains sometimes arrive early. True or False? False! 57. All little boys like toy airplanes. Yes or no? Yes! 58. Some little boys like model trains. Yes or no? Yes! 59. All green fruits are sweet. (True or False?) False! 60. Some green fruits are sweet. (True or False?) True! Syllyogism Triggers[61-80]61. All wasps are aggressive. Puppies are NOT? WASPS 62. No muffins are tasty. Buns are NOT ? MUFFINS 63. Some unauthorised reports are false. Some false reports are NOT? TRUSTWORTHY 64. No idlers gain fame. Some painters GAIN? FAME 65. No rich persons are honest. Some rich women are? DISHONEST 66. A wise man shuns hungry lions. No banker fails to SHUN? HUNGRY LIONS 67. Poorly-managed business is unprofitable. All Research companys ARE? PROFITABLE! 68. All young goats laugh. All young goats are HEALTHY! 69. No birds, except peacocks, are proud of their tails. Some peacocks cannot? SING! 70. No frogs are poets. Some ducks are NOT? FROGS! 71. No teachers are dentists. No teachers are? DREADED BY CHILDREN! 72. Kathy is sweet. Bill is not? KATHY! 73. Every eagle can fly. Some horses are NOT? EAGLES! 74. All geeese are despised. No geese are? DRAGONS! 75. All jokes are meant to amuse. Congress is not? AMUSING! 76. Some healthy people are fat. Some fat people are NOT? STRONG! 77. I saw it on the web. It was a? LIE! 78. No misers are generous. Some old men are? MISERS! 79. All, who are anxious to learn, work hard. Some of these boys are? ANXIOUS TO LEARN! 80. All lions are fierce. Some creatures that drink coffee are not Fierce! |
INTERACTIVE Poly-Syllogisms: [ 11- 25]-(show/hide)11. All evil thoughts are counterproductive. Therefore, to be not busy is counterproductive 12. It is snowing. Therefore, if we go out We get Sick 13. All leopards are spotted cats. Therefore all leopards are felines 14. The sun is shining. Therefore, if Sally doesn't go out now She won't get sunburned! 15. There is a fog on a lake. Therefore, if we don't go boating We will be happy! 16. No chefs are not good cooks. Johnny is Not a chef 17. All despots never allow freedom. Therefore Democracies? are not despotic! 18. No criminals are honest people. Therefore criminals always lie. 19. All criminals are never honest. Therefore, good people are not liars 20. Fact is sometimes stranger than fiction. Therefore, Fiction is very entertaining. 21. All Bakers are chefs. Therefore Jenkins is a chef. 22.All ducks are swans. Therefore, No swans are are deep sea divers! 23. No adventure ever begins without a first step. Therefore, life must be an adventure! 24.No acrobatic person is not athletic. Therefore Jerry is? no acrobat! 25.All athletes do some physical work. Therefore, Paddy is no athlete. INTERACTIVE Poly-Syllogisms: [ 26- 40]-(show/hide)26] All monkeys are small primates. Therefore , all monkeys . live in trees 27] My sister is married Therefore, no married people are not healthy 28] The sun is shining. Therefore if we go out, we will not smile 29] Tomorrow is monday. Therefore, if we work on monday we will be happy! 30] All digital cameras are battery-powered devices. Therefore All battery-powered devices are sometimes wasteful! 31] No artists are robbers. Therefore no good robbers are artists 32] Riddles often puzzle me. Therefore no solvable riddles ever puzzle me! 33] No goods in this shop, that have been bought and paid for, are still
on sale; All of the goods not carried away are not sold. 34] Promise-breakers are untrustworthy. Therefore, One can always trust a honest wine-drinker 35] No kitten, that loves fish, is unusual. Therefore, a kitten without a tail has no whiskers. 36] None of the pictures here, except the oils, are valuable. Therefore, All those in frames have been sold. 37] Animals, that do not kick, are always boring. All animals are excitable, except a bull! 38]No one, who is going to a party, ever fails to fix his hair. Therefore, A man is always untidy, if he has no self-control! 39]All ducks in this village, that are named 'Betty,' belong to Mrs.
Bond;
. Therefore all gray ducks in the village are not named BETTY ! 40] Nobody, who really appreciates Beethoven, fails to keep silent
while the Moonlight-Sonata is being played;
. Guinea-pigs cannot appreciate Beethoven. |
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WE ARE PLEASED TO ANNOUNCE OUR FIRST E-BOOK , A COMPILATION OF 'OUR BEST LOGIC PUZZLES' JAM-PACKED WITH OVER 80 LOGIC PUZZLES FROM OUR WEB-PAGES.
OUR BEST LOGIC PUZZLES (COMPILATION)
PICK UP THE E-BOOK VERSION HERE FOR ONLY $4.99.
OR YOU CAN OBTAIN THE PAPER-BACK COPY : HERE FOR $8.99 OR AT AMAZON.COM
Riddles:
If you try to fail and succeed, what have you done?
Does 'expect the unexpected' make the unexpected expected?
If we are here to help others, what are the others here for?
If corn oil is made from corn and olive oil made from olives, what is baby oil made from?
More Riddles:
If you have a bunch of odds and ends and throw away all but one, what do you have left?
Would a fly without wings be called a walk?
Why is 'abbreviation ' such a long word?
What was the best thing 'before' sliced bread?
Why isn't there mouse-flavored cat food?
Why is the person who invests your money called a broker?
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