Difficult math brain teaser (1) 1. What wastes a third of a person's life? Answer: bed
2. A pile of watermelons, half is half, less than half is half. How many watermelons are there in this pile? Answer: 2
3. Excuse me: Divide 18 into two parts, not 9. How many answers will you get: 10 (starting from the middle)?
Xiaoli and her mother bought 8 apples, and her mother asked Xiaoli to put them in 5 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.
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).
6. A square table is missing a corner. How many angles are there? Answer: 5 cents.
7. Slip away (hint: pay attention to homophonic). Tie 10 horse, only one horse can be tied, not two horses. How? Answer: 1 A horse tied to a tree is just right (? Slip away? It happens to be a six, so 1+6+3= 10)
8. What numbers make women love and hate? Answer: March 8.
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.
10. 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.
Difficult math brain teasers (2) 1. Rose, who just went to kindergarten in the first grade, has never studied mathematics, but the teacher praised her math level as one of the best. Why? A: He will only be one of the best.
2. How many cubic meters of silt are there in a pond 4 meters long, 3 meters wide and 2 meters deep? Answer: The pond is empty and there is no mud.
Xiaoming bought a 75-yuan item with a hundred yuan, but the boss only gave him five yuan. Why? Answer: He only gave it to 80 yuan.
Can you make a number greater than 3 and less than 4 with three chopsticks? Answer: Take pi?
5.6 How to arrange 24 people in a row by 5 people? Answer: hexagon.
6. 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 forty-eight.
7. 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.
8. Two chess players played nine games a day, winning the same number of times, and there was no draw. What happened? A: There are nine games left unfinished. The teacher put five apples in the basket and prepared to give them to five children. Every child got one, but there is still one in the basket. How to divide it? Answer: Five people divide one into four.
9. What is walking with six feet but only four feet? Answer: knight
10.24 people, 5 people, 6 rows in the city. How to arrange them? Answer: Just arrange in regular hexagon.
1 1.5 gave birth to 5 chickens and 5 eggs. /kloc-how many chickens does it take to get 100 eggs in 0/00 days? Answer: Still five chickens.
12.3 how many buckets of water are there for three people and nine people for nine days? Answer: 9 links
13. 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.
14. How to make the equation X+I=IX hold in the simplest way? Answer: 1+X
15. It costs 2 14 yuan 56 points to buy a pair of high-grade women's leather shoes. How much is one? Answer: One is not for sale.
16. There are three children guessing, one is scissors, the other is stone, and the other is cloth. How many fingers do these three people have? Answer: sixty
Difficult math brain teasers (3) 1. Eight numbers? 8? How to make it equal to 1000? Answer: 8+8+8+88+888
2. Xiao Qiang was only 6 points short of passing math, and Xiaoming was only 6 points short of passing math, but Xiaoming and Xiao Qiang got different scores. Why? Answer: One is 54 points and the other is 0 points.
A well is 7 meters deep, and a snail climbs up from the bottom of the well, climbing 3 meters during the day and falling 2 meters at night. How many days does it take for a snail to climb out of the well? A: Five days.
Someone bought a toy with 19 quick money and sold it for 20 quick money. He didn't think it was worthwhile, so he spent 2 1 quick money to buy it and 22 quick money to sell it. How much did you earn? Answer: 2 yuan.
5. 100 steamed stuffed bun, 100 people to eat, 1 adults to eat three, three children to eat 1 one, how many adults and how many children can just finish it? Answer: 25 adults and 75 children.
6. Xiao Wang went to the Internet cafe to open a membership card and asked for 20 yuan. Xiao Wang didn't find any change, so he gave the stationmaster a 50 yuan bill. The stationmaster asked 30 yuan to give the little queen, and Xiao Wang gave 20 yuan's change. After giving it to the stationmaster 20 yuan, the stationmaster returned the former 50 yuan to him. Who lost? Answer: The webmaster lost 30 yuan.
7. Every 1 minute, 1 gun is fired, and how many shots are fired every 10 minute? Answer: 1 1 gun
8. The number without the first number is 13, and the number without the last number is 40. What's the number, please Answer: Forty-three
9. 1 2 meter long rope tied 1 puppy to the trunk. Although the puppy greedily looks at the L bones 2. 1 m away from it, it can't reach them. Excuse me, how should a puppy grasp a bone? Answer: Turn around and grab it with your hind legs.
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. If the first number before a number is 1 1 and the last number is 50, what is the original number? Answer: Fifty-one
12. A bacterium divides into two after 1 min, and divides into four again after 1 min. In this way, it takes 1 hour to put a bacterium in the bottle until it is full. If you put two such bacteria in the bottle from the beginning, how long will it take to fill the bottle? Answer: 59 minutes
13. Put the eggs in a basket, assuming that the number of eggs in the basket increases by 1 time per minute, so that after 12 minutes, the basket will be full. So, when is it half a basket of eggs? Answer: 1 1 min
14. There are 100 teams participating. How many fights will it take to choose the champion? A: There will be 99 matches.
15. Use three 3s to make a maximum number? Answer: 3 to the 33rd power.