Logic thinking questions

1. there are five girls sitting side by side in the subway carriage. A is sitting at exactly the same distance from B and C, and D is sitting at exactly the same distance from A and C, E sat between her friends and family. Who are friends and friends of E?

Answer: E is sitting between A and B, and A and B are her friends and friends.

2. There are 692 infantry in a certain fortress, with each 4 standing in a horizontal row, each of which is 1 metres forward and 1 minute walk 86 meters. Now we need to use a 86-meter bridge. Will it take several minutes to Bridge the first to the last?

Answer: 3 minutes.

3. A farmer raised 9 sheep, 7 pigs, and 5 cows. In terms of price, two sheep can be exchanged for a pig, and five sheep can be exchanged for one ox. He wants to give these cows, sheep, and pigs to three sons. Not only will the number of livestock be the same but the value be equal. Can you come up with an allocation scheme?

Answer: The eldest son has one ox, five pigs, and one goat. The second son has two cows, one pig, and four sheep; the three sons are divided into two cows, one pig, and four sheep.

4. The two vehicles are 1500 metres apart. Assuming that the front car is moving at a speed of 90 km/h and the rear car is catching up at a speed of 144 km/h, how far will the two cars be apart from each other in one second?

Answer: The distance is 15 meters.

5. There are two recruitment managers, Company A and Company B. Company A has an annual salary of 0.1 million yuan, with a salary increase of 20 thousand yuan every year. Company B has a salary increase of 50 thousand yuan every six months, with a salary increase of yuan each time. Ask which company to earn more salaries?

Answer: I earn more salary from Company B.

6. the famous Russian mathematician Luo mengnoov borrowed the book "mathematical principles" from his neighbors and said to him, "You helped me cut firewood for 10 days. I will give you the book and 20 rubles for you. "As a result, he only split the firewood for seven days. The neighbor gave the book to him and paid another five rubles. What is the price of the book "mathematical principles?

Answer: the book price is 30 rubles.

7. the bottle contains 15% grams of alcohol with a concentration of 1000. Now, 100 grams of a and B are respectively poured into the bottle, then the alcohol concentration in the bottle becomes 400, it is known that the concentration of a type of alcohol is twice that of B type of alcohol. What is the concentration of a type of alcohol?

Answer: 20%

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Interesting Question 1: Can I cut a square into six large and small squares?

Interesting Question 2: two candles of the same length. The first candle can be set to 4 hours, the second candle can be set to 3 hours, and the second candle can be set to the same time.
How long will the first candle be twice the length of the second candle?

Interesting Question 3: adding 168 to a number to get the square of a positive integer, and adding 100 to get a positive integer
Square. What is the number?

Interesting Question 4: someone has been walking for 5 hours. He first walks along the flat road, then goes up the mountains, and finally walks back along the original road.
In-situ. If he walks 4 km every hour on the road, goes 3 km every hour, and goes down the hill
How many kilometers did he spend in five hours?

Interesting Question 5: Miss Zhao's age has the following characteristics: (1) the power of 3 is a four-digit, and the power of 4
Is a six-digit number; (2) the four-digit and six-digit numbers are exactly the ten digits 0-9.
Number. Q: How old is Miss Zhao?

Interesting Question 6: There are three horses A, B, and C on the runway of the racecourse. A can run two laps in one minute, and B can
Run three laps, and C can run four laps. Now we have three horses side by side on the starting line, ready to move to the same party
Start. Excuse me: after several minutes, the three horses can run on the start line side by side?

Interesting Question 7: There are four numbers. The sum of any three numbers is, 88, 99, respectively,
110. Try to find these four numbers.

Interesting Question 8: In the same plane, one circle divides the plane into two parts, and two circles divide the plane into up to four
Section,..., so what is the maximum number of parts of a plane divided by 10 circles?

Interesting Question 9: A person walks from M. He turns to the right for 15 degrees, and then advances 20 meters.
Turn right at 15 degrees. Can he go back to M? If yes, he
When I got back to M, how many meters were there?

Interesting Question 10: two different coins are tangent, and the other circle rolls around the other and returns to the starting point,
How many times does the circle rotate?

Interesting question 11: Can I cut a square into six large and small squares?

Interesting question 12: two candles of the same length. The first candle can be set to 4 hours, the second candle can be set to 3 hours, and the second candle can be set to the same time.
How long will the first candle be twice the length of the second candle?

Interesting question 13: adding 168 to a number produces the square of a positive integer, and adding 100 to a positive integer
Square. What is the number?

Interesting Question 14: Someone walked for 5 hours, first along the flat road, then on the Hill, and finally walked back along the original road
In-situ. If he walks 4 km every hour on the road, goes 3 km every hour, and goes down the hill
How many kilometers did he spend in five hours?

Interesting question 15: Miss Zhao's age has the following characteristics: (1) the power of three is a four-digit, and the power of four
Is a six-digit number; (2) the four-digit and six-digit numbers are exactly the ten digits 0-9.
Number. Q: How old is Miss Zhao?

Interesting question 16: There are three horses A, B, and C on the runway of the racecourse. A can run two laps in one minute, and B can
Run three laps, and C can run four laps. Now we have three horses side by side on the starting line, ready to move to the same party
Start. Excuse me: after several minutes, the three horses can run on the start line side by side?

Interesting question 17: There are four numbers. The sum of any three numbers is, 88, 99, respectively,
110. Try to find these four numbers.

Interesting question 18: In the same plane, one circle divides the plane into two parts, and two circles divide the plane into up to four
Section,..., so what is the maximum number of parts of a plane divided by 10 circles?

Interesting question 19: A person walks from M. He turns to the right for 15 degrees, and then advances 20 meters.
Turn right at 15 degrees. Can he go back to M? If yes, he
When I got back to M, how many meters were there?

Interesting question 20: Two different coins are tangent, and the other circle rolls around the other and returns to the starting point,
How many times does the circle rotate?
Answer:
Interesting Question 1: it is easy to cut nine items. When four of them are regarded as one, the remaining one is five, so it can be cut into six.
Fun Question 2: 2. 4 hours
Interesting Question 3: This number is 156.
Interesting Question 4: this person spent 20 km in five hours.
Interesting Question 5: Miss Zhao is 18 years old.
Interesting Question 6: One minute later, when A finishes two laps, B finishes three laps, and C finishes four laps, the three horses are in A flat state again on the starting line.
Interesting Question 7: The four numbers are:, and 17 in sequence.
Interesting Question 8: 92 in total.
Interesting Question 9: This person traveled 480 meters in total.
Interesting Question 10: 2 circles.
Interesting question 11: it is easy to cut nine items. When four of them are regarded as one, the remaining one is five, so it can be cut into six.
Interesting question 12: 2. 4 hours
Interesting question 13: This number is 156.
Interesting Question 14: this person spent 20 km in five hours.
Interesting question 15: Miss Zhao is 18 years old.
Interesting question 16: one minute later, when A finishes two laps, B finishes three laps, and C finishes four laps, the three horses are on the starting line again.
Interesting question 17: the four numbers are:, 39, in sequence.
Interesting question 18: 92 in total.
Qutitle 19: This person traveled 480 meters in total.
Interesting question 20:2 circle


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Logic thinking questions