Interesting math brain teaser (1)
1.6 row of 24 people how to press 5 people? A: Arranged in a hexagon.
2. In a word, it is 48 heads, and there is water in it that doesn't flow out. Guess a word. Answer: Yes. The key to this mystery is to understand four tens and eight heads, not 48.
There are three vacant rooms. One room has three light areas and the other room has three switches. Each switch can only turn on one light. If you can only enter each room once, how do you know which switch controls which light? Answer: Go into a room with a switch, turn on one of the switches and turn it off after 5 minutes.
Two chess players played nine games a day, and won the same number of times, but there was no draw. What happened? A: Not all nine games are played by them.
5. A pile of watermelons, half is half, less than half is half. How many watermelons are there in this pile? Answer: 2
6. Excuse me: Divide 18 into two parts, not 9. How many answers will you get: 10 (starting from the middle)?
7. Xiaoli and her mother bought eight apples, and her mother asked Xiaoli to put them in five pockets, each of which was even. Can you do it? Answer: There are two apples in each pocket, and the last four pockets are put in the fifth mouth.
8. Mom and Dad have four daughters, and each daughter has a younger brother. How many people are there in this family? Answer: Seven (four daughters, one brother, mom and dad).
9. A square table is missing a corner. How many angles are there? Answer: 5 cents.
10. Slip away (hint: pay attention to homophonic). Tie 10 horse. Only one horse can be tied, not two horses. How to tie it? Answer: 1 A horse tied to a tree is just right (? Slip away? It happens to be a six, so 1+6+3= 10)
1 1. What numbers make women love and hate? Answer: March 8.
12. Please put nine horses in ten stables on average, and make the number of horses in each stable the same. How to divide it? Answer: Put nine horses in a stable, and then put nine horses outside the stable.
13. Motorcycle speed is 80km/h, heading north. There is an easterly wind of 20 kilometers per hour. In which direction does the motorcycle smoke blow? Answer: There is no smoke in the tram.
14. It takes six hours from Beijing to Shanghai by train. After three hours of exercise, where should the train be? A: On the tracks.
15. 1, what is the maximum number of 2,3? Answer: 3 is 2 1 power.
16. The teacher put five apples in the basket for five children. Every child will get one, but there is still one in the basket. How to divide it? Answer: Five people divide one into four.
17. What is walking with six feet but only four feet? Answer: knight
18.24 people are arranged as 5 people, with 6 rows in the city. How to arrange them? Answer: Just arrange in regular hexagon.
19.5 chickens laid 5 eggs in 5 days. /kloc-how many chickens does it take to get 100 eggs in 0/00 days? Answer: Still five chickens.
20. How many buckets of water do three people use for three days and nine people use for nine days? Answer: 9 links
Interesting Mathematical Brainstorming (2)
1. What is the first thing Santa puts in his socks on Christmas Eve? Answer: feet
2. There was a young man who shed 400 ml of blood, but his face was smiling. Nothing happened, and he still felt very happy? Answer: yes, I participated in voluntary blood donation.
3. What will happen when the air conditioner falls from the upstairs? Answer: murder weapon (beating); Air conditioning (whether it is broken or air conditioning)
4. What should I pay attention to during the exam? Answer: invigilator.
5. What are the flowers that bloom all year round? Answer: fake flowers.
A fierce and hungry cat saw a mouse. Why did it run away? Answer: Catch mice.
7. There is a girl walking on the beach in a bathing suit. Why are there no footprints behind her? Answer: She walks backwards.
8. How to make numbers smaller than three and four with three chopsticks? Answer:? ，pi 3 14 15926
9. When five pieces of wood are put together, what will it eventually become? Answer: forest
10. When will the sun and the moon be together? Answer: Tomorrow.
1 1. An electric bicycle travels south at a speed of 60 kilometers per hour. There is an easterly wind blowing at a speed of 2 kilometers per hour on the road. In which direction does the smoke from the electric bicycle blow? Answer: Electric bicycles don't smoke.
12. A big wooden house is lighter than air, but it won't move even if 100 people push it! Why? Answer: It's the shadow of the wooden house.
13. Among the soldiers numbered 1-9, who is alive and who is dead? A: Seven are alive and eight are dead (seven are dead and eight are alive).
14. Why does Xiao Li always fish for three days and dry the net for two days? Answer: Xiao Li is a fisherman.
15. Can people living in Macao be buried in Shanghai? A: How to bury the living?
16. What word is universal? Answer: Arabic numerals
17. What walks around the house without touching anything? Answer: sound.
18. Xiaoming found that his room was stolen, but he was not nervous at all. Why did he answer: Is that someone else's room?
19. What are the things that you obviously didn't do, but you have to be punished? Answer: Do your homework.
20. Sasha claims to be an expert in distinguishing the age of hens. His unique skill is to use his teeth. Why? Answer: Eat chicken to see if the hen is old or tender.
Interesting Mathematical Brainstorming (3)
1. How long does it take to finish Peking University? A: A banknote clock is enough.
Xiaohong and her mother are both in the same class. Why? A: One is a student and the other is a teacher.
A marshal is one level higher than a general. When will the marshal and the general be equal? Answer: Playing chess.
4. Do you need athletes in sports competitions? Higher, faster and stronger? Do you want it? Forward? But there is one kind of competition that can only be postponed. What kind of competition is this? Answer: Tug of War.
5. What can make ice turn into water quickly? Answer: Remove two points from the word ice.
There are two bridges on a river, one is high and the other is low. Why does the high flood twice a year and the low flood only once? A: Gao Qiao is downstream.
7. Who is the tiger's brother? Answer: cats
8. Who likes to chew words best? Answer: bookworm
9. Three people were walking in the street with a small umbrella, but they didn't get wet. Why? Answer: It didn't rain.
10. Although there is a road extending in all directions, it just can't be taken. Why? Answer: it is a circuit.
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