Interesting math brain teaser

Brainstorming is a language game that exercises people's thinking. Here is an interesting math brain teaser I prepared for you. I hope you like it!

Interesting math brain teaser (1)

1.6 How to arrange 24 people in row according to 5 people? A: Arranged in a hexagon.

2. 48 heads in a word, there is water in it that does not flow out. Guess a word. Answer: Yes. The key to this mystery is to understand four tens and eight heads, not forty-eight heads.

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: Enter a room with a switch, turn on one of the switches and turn it off after 5 minutes.

Two chess friends played nine games a day, they won the same number of times, and there was no draw. What happened? Answer: Not all nine games are played by them.

5. A pile of watermelons, half less than half. How many watermelons are there in this pile? Answer: 2

6. Excuse me: Divide 18 into two parts, not nine. How many answers will you get: 10 (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). To tie 10 horses, you can only tie a single horse, 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. The speed of the motorcycle 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 and prepared to give them to 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 it in regular hexagon.

19.5 chickens laid 5 eggs in 5 days. How many chickens does it take to get 100 eggs in 100 days? Answer: Still five chickens.

20. How many buckets of water do three people use in three days and how many buckets do nine people use in 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

There was a young man who shed 400 ml of blood, but he was very happy with a smile on his face and nothing happened? A: Yes, I participated in voluntary blood donation.

3. What will happen when the air conditioner falls from the upstairs? A: The murder weapon (beating people); Air conditioning (whether it is broken or air conditioning)

4. What should I pay attention to during the exam? A: The 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 or 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 with a speed of 2 kilometers per hour. In which direction does the smoke from the electric bicycle blow? Answer: There is no smoke on electric bicycles.

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 people are alive and eight people are dead (seven people are dead and eight people 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? Answer: 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. Is there anything 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: Eating chicken can tell whether the hen is old or tender.

Interesting Mathematical Brainstorming (3)

1. How long does it take to finish reading 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 a 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? A: Remove two points from the word ice.

There are two bridges on the river, one is high and the other is low. Why does the high flood twice a year and the low flood only once? Answer: Gao Qiao is downstream.

7. Who is the tiger's brother? Answer: cats

8. Who likes to think about words over and over again? 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: This is a circuit.

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