Math brain teasers do not involve mathematical operations or logical reasoning, but only interesting math problems. Then I collected a complete set of mathematical brain teasers. Welcome everyone to have a look.
Math brain teaser 1 1) It takes three minutes for three children to eat three cakes, and how long does it take for ninety children to eat ninety cakes? Answer: Three minutes.
2) How to make the equation X+I=IX hold in the simplest way? Answer: 1+X
3) It costs 2 14 yuan 56 points to buy a pair of high-grade women's leather shoes. How much does it cost to buy one? Answer: One is not for sale.
4) There are three children guessing boxing, one for scissors, one for stone and one for cloth. How many fingers do these three people have? Answer: sixty
5) What wastes one third of people's lives? Answer: bed
6) A ruler with the length of 1 1 cm can be used to measure the length of any integer cm between 1 and1cm? If possible, which scales should be engraved? A: Yes, the scale can be set at 2, 7 and 8.
7) In the exam, Xiaohua rolled the dice to decide the answer, but there were 20 questions. Why did he throw it 40 times? Answer: He wants to check it again.
8) It takes 30 seconds for the wall clock to strike six times, and how many seconds does it take to strike 12? Answer: 66 seconds
9) When is 4-3 = 5? A: When the calculation is wrong.
10) Aunt Wang has three sons, each of whom has an elder sister and a younger sister. How many children does Aunt Wang have? Answer: Five.
1 1) Under what circumstances can two tigers fit in one mountain? A: A man and a woman.
12) A bull and a cow. Guess three words: two cows.
13) Why do modern people break their promises more and more? Answer: Because it is more convenient to make a phone call than to write a letter.
14) It takes three minutes for three children to eat three cakes, and how long does it take for ninety children to eat ninety cakes? Answer: three minutes, let's eat together.
15) Why do four 9s add up to 100? Answer: 9/9+99
Math brain teaser II 1. How to divide five apples between two people is the fairest?
Answer: squeeze into juice
Several students lined up to get on the school bus. There are four students in front of four students, four students behind them and four students among them. How many students are there in a * *?
Answer: 8
The doctor will give you three pills, and take one every half hour. How long will it take to complete?
A: One hour.
Uncle Li has seven sons, all of whom have a sister. So, how many children does Uncle Li have?
Answer: Eight children.
5. There are 12 lighted candles on the table. First three were blown out by the wind, and then two were blown out by a gust of wind. Finally, how many candles are left on the table?
Answer: five, because all the things that didn't blow out were burned out.
6. There are six steamed buns in the basin, which are given to each of the six children 1, and there is 1 in the basin. Why?
Answer: A child took the steamed bread and the basin away.
7. Twenty-four people are arranged in six rows according to five people. How to arrange them?
Answer: Just arrange in regular hexagon.
8. When is four minus one equal to five?
Answer: quadrilateral, MINUS one angle, becomes pentagon.
9.5 is greater than 0, 0 is greater than 2 and 2 is greater than 5. Do you know what is going on?
Answer: This is a game of "scissors, stones and paper". Fist is 0, scissors is 2, and open hand is 5.
10. Heavy smoker A smokes 50 cigarettes a day, while heavy smoker B smokes 10 cigarettes a day. Five years later, smoker B smoked more cigarettes than smoker A. Why?
A: Heavy smoker A smoked too much and died young.
1 1. Someone spent 19 yuan buying a toy and selling it to 20 yuan. He didn't think it was cost-effective, so he spent 2 1 yuan on it and sold it in 22 yuan. How much did you earn?
Answer: 2 yuan.
12.4+4+4 (guess a fruit)
Answer: 16, pomegranate
13. At a banquet, a couple shook hands with the guests 48 times and asked how many people were at the banquet.
Answer: 26 people
14. Xiaoli and her mother bought 8 apples. Her mother asked Xiaoli to put these apples into five pockets, and each pocket 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.
15. A tailor has a piece of woolen cloth, which is 16 meters long. She cuts off two meters from it every day. A few days later, she cut off the last piece of woolen cloth.
Answer: (8- 1)=7 (days)
16. It takes three minutes for three children to eat three cakes, and how long does it take for ninety children to eat ninety cakes?
Answer: Three minutes.
17. Xiao Han's mother ironed clothes. It takes five minutes for a dress and three minutes for a pair of trousers. There are three small clothes and a pair of trousers now. How many minutes does it take Han Xiao's mother to finish ironing?
Answer: 18 minutes
18. A watermelon is cut into 9 pieces with 4 knives. How to cut?
A: The word "well" is cut.
19. There are 100 baseball teams participating in the game. How many games does it take to choose the champion?
A: There will be 99 matches.
Mathematical brain teasers 3 1) diameter of the road without bending (guess a mathematical term).
2) the formula of everyone's appearance (guess the mathematical term 1)
3) Su Dongpo stepped on Su of Cui (a mathematician, I guess).
4) Grandpa took part in the 100-meter race (presumably a mathematician) Zu Chongzhi.
5) Index of the math teacher's pointer (type a math noun)
6) Divorce by agreement (use a mathematical noun).
7) Wrist wrenching; (Type a mathematical noun) Proportion (specific force)
8) look around; (type a mathematical noun) transposition.
9) North (guess the mathematical term 1) is inversely proportional.
10) The sword pierces the overlord of Chu. (Guess the math noun 1) General term
1 1) sharpen one's fist and wipe one's hands (type a mathematical noun) and have equal angles.
12) Fair Corner of Team Competition (punch a mathematical term)
13) 555,555,555 (guess an idiom) small group.
14) Goodbye! Mom (guess a math noun) denominator
15) 5, 4, 3, 2, 1 (guess a mathematical term)
16) Fifty cents (guess a mathematical term) semicircle
17) passenger transport regulations (in a mathematical term) multiplication
18) after the diagnosis, the doctor began to write (guess a mathematical operation) a prescription.
19) Waiting order (type a mathematical noun) is equal.
20) Two cows fight (guess a mathematical concept) and check the vertex angle.
2 1) Road construction cannot be potholed (guess a mathematical term) parallel.
22) member (guess a mathematical term) center of the circle
23) Fire extinguishing (guess the number of China) 1
24) Spring Rain Sprinkles Hometown (Guess Mathematician) Chen Jingrun
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