logic to solve problems logic to solve problems
logic to solve problems
LOGIC LOGIC. Is the correct way to get the answer wrong but feeling happy with yourself.
2. MEDIA NOTE. The average mark achieved in a class of 20 students was 6. Eight students have been suspended with 3 and the rest over 5. What is the average score of students who passed?
3. All four athletes. Four athletic track is known that C has come immediately after B, and D has come in the middle of A and C. Can you calculate the order of arrival?
4. Six friends on vacation. Six friends wishing to holiday together and decide, every two, using different means of transport, we know that Alexander does not use the car as it came to Bob is not going by plane. Andrew travels by plane. If Carlos is not accompanied by Darius or make use of the airplane, could you tell us about the transport reaches its destination Thomas.
5. The four dogs. We have four dogs, a greyhound, a bulldog, a mastiff and a spaniel. The latter eats more than the greyhound, the mastiff eats more than the greyhound and less than the Bulldog, but he eats more than the hound. Which of the four will be cheaper to maintain?
6. TENNIS CATEGORY. In a match of the prestigious tennis tournament at Roland Garros and Becker Agasy faced. The first corresponded to triumph 6-3, 7-5. Getting started Agasy and never lost his serve. Becker lost his serve twice. Agasy broke serve of his opponent in the second game of the first set, and what game of the second set?
7. Sea snakes. A captain in the Caribbean was surrounded by a group of sea snakes, many of whom were blind. Three were not Eye on the starboard, 3 saw nothing to port, 3 starboard could see, 3 to port 3 could see both starboard and port, while another 3 had both eyes ruined. What is the minimum necessary number of snakes that they are given all these circumstances?
8. UNEMPLOYMENT INCREASES. On the occasion of performing a statistical study of the components of a population, an agent selected sample of families analyzed. The result was as follows:
1) There were more parents than children.
2) Each boy had a sister.
3) There were more boys than girls.
4) There were no childless parents.
What do you think happened to the agent?
9. TENNIS MATCH. Santana won a set of tennis Orantes 6-3. Five games were won by the player did not work. Who served first?
10. HORSES. Mac's horse is darker than Smith, but faster and older than Jack, which is even slower than Willy, who is younger than the Mac, which is older than Smith , which is lighter than Willy, but the Jack is slower and darker than Smith. What is the oldest, which is the slowest and which is clearer?
Sometimes certain people are in a critical situation, and only by his wit and intelligence can get out.
11. THE SCANNER CONDEMNED. An explorer was captured by a tribe of Indians, he was offered the choice between death by fire or poisoned. To this end, the offender must utter a sentence such that, if true, would die poisoned, and whether it was false, he would die at the stake. How escaped condemned his dismal fate?
12. THE PRISONER AND THE TWO GUARDIANS. A Sultan holds a prisoner in a cell with two guards, one always tells the truth and someone who always lies. The cell has two doors: the freedom and slavery. The door you choose the prisoner to leave the cell decide its fate.
The prisoner has the right to ask a question and only one of the guards. Of course, the prisoner does not know which one tells the truth and what is a liar.
Can the prisoner liberty to obtain a secure manner?
13. THE PRISONER AND THE THREE GUARDIANS. Imagine that there are three doors and three guards, two in the above conditions and the third party is telling the truth or lie alternately. What is the smallest number of questions to ask to find freedom surely?
14. THE PRISONERS AND BERETS 3 (1). The director of a prison called three of their prisoners, taught Berets three white and two black berets, and says, "I will put each of you a beret on his head, the first of you to tell me the color of yours will be released."
If prisoners are lined up so that the former can not see the berets of the other two, the second is the beret of the first and the third is the berets of the other two. Reason why one of the prisoners get the freedom?
15. THE PRISONERS AND BERETS 3 (2). The director of a prison called three of their prisoners, berets taught three white and two black berets, and says, "I will put each of you a beret on his head, the first of you to tell me the color of yours will be released. "
If prisoners can move, and therefore see the berets of the other two. Reason why one of the prisoners get the freedom?
16. THE deceived husbands. Forty courtiers of the court of Sultan were deceived by their wives, which was clearly known by all other members of the court without exception. Only every husband know their own situation.
Sultan: "At least one of you has an unfaithful wife. I wish that it ejects one morning in the city, when you are sure of infidelity. "
After 40 days, morning, forty courtiers deceived the women expelled from the city. Why?
17.
18. THE CONDEMNED TO DEATH. In ancient times the grace or punishment were frequently left to chance. So, this is the case of an inmate to a sultan decided that the saving or die in a random drawing from among two possible ballot: one with the sentence "death", the other with the word "life", indicating grace. The trouble is that the Grand Vizier, who wanted the defendant died, made in the two papers were written the word "death." How he managed the defendant, aware of the plot of the Grand Vizier, to be sure to save? The accused was not allowed to talk and discover Vizier entanglement.
19. THE ATHLETES. Ana, Beatriz, and Carmen. One is a tennis player, another gymnast and a swimmer. The gymnast, the lowest of the three, is single. Ana, who is mother of Beatrice, is higher than the player. What sport practiced each?
20. Syllogism. Example that is in all elementary logic textbooks. The syllogism:
"Men are mortal, Socrates is a man
.
then Socrates is mortal. "
is undoubtedly known and inevitable valid. What about the following:
"The Chinese are numerous,
Confucius is Chinese.
Then Confucius is large. "
21. CHESS TOURNAMENT. In a chess tournament involving 30 contestants were divided, according to its category in both groups. In each group, participants played a game against everyone else. In total 87 games were played more in the second group than the first. The winner of the first group did not lose a game and finished with 7.5 points. How many games did the winner tables?
22. THE THREE LETTERS. Three cards, taken from a French deck, lying face up in a horizontal row. To the right of a king there are one or two ladies. To the left of a Lady is one or two ladies. To the left of a heart there are one or two spades. To the right of a pike is one or two spades. Say what three letters in question.
23. THREE COUPLES AT THE DISCO. Three young couples went to a nightclub. One of the girls wore red, one green, and the third blue. His companions also wore the same colors. Couples were already on the track when the red boy, going to dance with the girl in green, said to him:
Carlos: Have you noticed Ana? None of us has dressed couples of the same color.
With this information, we can determine what color dresses the dance partner of the girl in red?
24. White, blond and brown. Three people, whose surnames White, Blonde and Brown, meet in a meeting. Shortly after making the presentations, the woman notes:
"It's very odd that our names are White Blonde and Brunette, and that we have gathered here for three people with that hair color"
"Yes it is," said the person I had blond hair, but you may have noticed that nobody has the hair color that matches your name. " "It's true!" "Said White who was named.
If the lady has brown hair, what color is your hair blonde?
25. POLITICAL ONE HUNDRED. Brought together some one hundred political convention. Each politician was either either dishonest or honest. Data are given:
a) At least one of the politicians was honest.
b) Given any pair of politicians, at least one of them was dishonest. Will be determined based on these two data how many politicians were honest and dishonest?
26. EATING IN THE RESTAURANT. Armando, Basilio, Carlos and Dionysus were, with their wives, to dinner. In the restaurant, sat at a round table, so that:
- No woman sitting next to her husband.
- Basil sat in front of Dionysus.
- To the right of women sat Carlos Basilio.
- There were two women together.
Who sat between Basil and Armando?
27. STAMPS OF COLORS. Three subjects A, B and C were perfect logic. Each could instantly deduce any conclusions from any set of premises. Everyone was also aware that each other was a perfectly logical. Three were shown seven seals: two red, two yellow and three green. Then they were blindfolded and each was stuck a stamp on their foreheads, the remaining four seals were kept in a drawer. When they opened their eyes asked A:
- Do you know a color that you do not have security?
A, replied: "No. In same question answered B:-No.
Is it possible, based on this information, deduce the color of the label A, or B, or C?
28. THE LOGIC OF EINSTEIN. Problem posed by Einstein and translated into several languages \u200b\u200bwhile retaining their logic. Einstein claimed that 98% of world population would be unable to solve. I think you are the remaining 2%. Try it and see how I have reason.
Initial conditions:
- We have five houses, each with a color.
- Every home owner has a different nationality.
- The 5 owners drink a different drink, smoke a different brand and have different pet.
- No owners have the same pet, smoke the same brand or drink the same beverage type than another.
Data:
1. The Norwegian lives in the first house, next to the blue house.
2. The man living in the center house drinks milk.
3. The Englishman lives in the red house.
4. Swedish mascot is a dog.
5. The Dane drinks tea.
6. The green house is immediately left the White House.
7. The green house drinks coffee.
8. The smoking PallMall breeding birds.
9. The yellow house smokes Dunhill.
10. The man who smokes Blend lives next to the one who keeps cats.
11. He who keeps horses lives next to who smokes Dunhill.
12. The BlueMaster smoking drinks beer.
13. The German smokes Prince.
14. The man who smokes Blend has a neighbor who drinks water.
Who has fish for pets?
29. PUTTING NUMBERS (1). Place a number in each box, noting that:
a) 3, 6, 8, are in the top horizontal.
b) 5, 7, 9, are in the bottom horizontal.
c) 1, 2, 3, 6, 7, 9, are not in the left vertical.
d) 1, 3, 4, 5, 8, 9, are not in the right vertical.
30. PUTTING NUMBERS (2). Place a number in each box, noting that:
a) 3, 5, 9, are in the top horizontal.
b) 2, 6, 7, are in the bottom horizontal.
c) 1, 2, 3, 4, 5, 6, are not in the left vertical.
d) 1, 2, 5, 7, 8, 9, are not in the right vertical.
31. DECK THE SPANISH. On a table there are four letters in a row:
1. The horse is to the right of the panels.
2. The cups are further away from the swords swords of the clubs.
3. The king is closest to the horse as the king.
4. Swords, closer to the gold crown of swords.
5. The ace is further from the king that the king of the jack.
What are the four suits and in what order are they?
32. PUTTING NUMBERS (3). Place a number in each box, noting that:
a) 4, 5, 6, are in the top horizontal.
b) 7, 8, are in the bottom horizontal.
c) 2, 3, 4, 5, 8, 9, are not in the left vertical.
d) 1, 5, 6, 7, 8, 9, are not in the right vertical.
33. IN THE ELEVATOR. Four football players enter an elevator that can be transporting a maximum of 380 kilos. Not to sound an alarm, that would stop the elevator by overloading, you have to calculate their total weight rapidly. But how much weight each player? Here are the details: Paul who weighs more: if each of the other weighed much as the alarm would stop the elevator.
Carlos is the lightest, the elevator could rise to five as Renato weighs 14 kilos less than Paul, and only six less than Jesus. Jesus weighs 17 kilos more than Carlos. Paul's Fish and Carlos are multiples of five.
34. PUTTING NUMBERS (4). Place a number in each box, noting that:
a) 2, 5, 6, are in the top horizontal.
b) 4, 7, 8, are in the bottom horizontal.
c) 2, 3, 4, 6, 7, 9, are not in the left vertical.
d) 1, 2, 4, 5, 8, 9, are not in the right vertical.
35. THE CATERPILLAR AND THE LIZARD. The caterpillar thinks that she and the lizard are crazy. If you think the sane is always true and believes the fool is always false, is the lizard is sane? (Original Lewis Carroll)
36. The three dice. I have three dice with different letters. Rolling the dice I can form words: OSA, ESA, ATE, CAE, SOL, GOL, KING, SUR, MIA, PIO, FIN, DIV, but I can not form words such as DIA, VOY, RIN. What are the lyrics to each die?
37. ARE LIARS? Andrew: When I say the truth, you too.
Paul: When I lie, you too.
Is it possible that this time a lie and the other not?
38. CAKES FOR CHILDREN. A boy and half a cake and eat half a minute and a half. How many children does it take to eat 60 cakes in half an hour?
39. THE WEDDING. When Mary asked Mario if he wanted to marry her, he replied: "There'd be lying if I said that I can not tell you it's impossible to deny that if I think it is true that it remains true that not going to get married." Mary got sick. Can you help telling her if Mario wants to get married or not?
40. THE MEETING. Angel Boris, Diego Caesar and sat down to drink. He who sat to the left of Boris, drank water. Angel was compared with that drinking wine. Who sat to the right of Diego drank anise. The coffee and anise were facing. What was the drink of every man?
41. NUMBER. We seek a six-digit number with the following conditions.
- No amount is odd.
- The first is third in the fifth and half of the third.
- The second is the lowest of all.
- The last is the difference between the fourth and fifth.
42. The row of houses. In a row of four houses the Browns live next to Smith but not next to Bruce. If Bruce does not live next to Jones, who are the immediate neighbors of Jones?
43. COMPLETE. Complete the following sentence by placing words in the blanks: No poor is emperor, and some misers are poor, then: some are not (.........). (.........)
44. REVIEW OF HISTORY. Of the following statements. What are the two. taken together, prove conclusively that one or more girls passed the test of history?
a) Some girls are just as competent in history as children.
b) The girls who made the history test were more than boys.
c) More than half of the children passed the test.
d) Less than half of all students were suspended.
45. DRIVERS AND SEX. Statistics show that male drivers have more accidents than automobile drivers. The conclusion is that:
a) As always, men, typical macho, you are wrong in regard to the skill of the woman driver.
b) Men are better drivers, but do so more often.
c) lead the men and women equally well, but men do more mileage.
d) Most truck drivers are male.
e) There are insufficient data to justify a conclusion.
46. GASOLINE. If Jim got to the corner turn right or left may run out of fuel before finding a service station. Has left behind, but knows that if he returns, he will run out of petrol before arriving. In the direction that you do not see any supplier. Therefore:
a) may run out of gas.
b) runs out of gas.
c) should not continue.
d) has been lost.
e) should turn right.
f) should turn left.
47. TIRES. All tires are rubber. Everything is flexible rubber. Some rubber is black. According to this, is which of the following statements are true?
a) All tires are flexible and black.
b) All tires are black.
c) S ¾ what some tires are rubber.
d) All tires are flexible.
e) All tires are flexible and some black.
48. OYSTERS. All oysters are shells and all shells are blue, plus some shells are home to small animals. According to data provided, which of the following statements is true?
a) All oysters are blue.
b) All dwellings of small animals are oysters.
c) a) and b) are not true.
d) a) and b) are true the two.
49. PEOPLES. Along the road there are four people followed the Reds live next to the Greens but not of the Greys, the Blues do not live next to the Grays. Who then are the neighbors of the Greys?
50. THE TEST. Thomas, Peter, James, Susan and Julia did a test. Julia got a higher score than Thomas, James scored lower than Pedro but higher than Susan, and Peter managed fewer points than Thomas. Who got the highest score high?
51. ...
PIEDRAS NEGRAS COAH
The Governor of Mexico, Enrique Peña Nieto , hoped that in 2011 the electoral competition does not result in disqualification or dirty war, while committed to remain outside the electoral process l. 
"We are confident, as we reiterated our national leader Beatriz Paredes, who we will win the Presidency of the Republic in 2012 because reforms and agreements like this in the PRI, only show that we are strengthened and we will be taking firm steps in the coming electoral contests. " 
On 11 December, the governor State of Mexico, Enrique Peña Nieto became host a New Year's Eve celebration, which were invited various members of the PRI, led by its national president, Beatriz Paredes and 15 governors and legislators of the party tricolor. 
The governor of Mexico, Enrique Peña Nieto Torres opened Bicentennial Museum, which unveiled a plaque, made a tour of the facility and closed the time capsule, which will be opened in 100 years. 
