Original zzllrr xiaole zzllrr xiaole
Mathematics is really difficult for those who can’t, and it’s not difficult for those who can learn it. It’s not that I consulted Mr. Sun of the decimal newspaper, and finally I got the title of the fourth question. Sweat first! Remembering that many readers have asked the meaning of the riddle, I will explain it briefly together, but I won’t tell the answer, because the date of publication-March 14 has not yet come. Friends who have solved all the questions are also welcome to point a compliment, watch or take a bubble at the end of the article, so there is no need to provide the answer in the message, and give others some opportunities to think independently and enjoy the Eureka moment of solving the math problem. If you feel that solving problems is not enough, being alone is not as good as being happy. Here are some excellent free problem-solving apps for you to enjoy:
Generally speaking, the theme of this year’s International Math Day is Playing with Math (the official translation of classical Chinese is to swim in numbers and feel elegant), which encourages all people, men, women and children to participate. Not only is the topic wordless (breaking the language restrictions of national boundaries), but it is also guided by cleverly designed examples. Think more, relax your mind, don’t think so complicated, and it is easy to guess the meaning of the problem (although the solution may not be necessary)
The first question is Sudoku, with 4 squares (4×4 squares), the purple part on the left is an example, and the title on the right is required. The numbers 1~4 are required to appear only once in each row, column and house (that is, four 2×2 Tian Zige separated by thick lines).
The second question is to use eight eights to construct a formula for four operations (allowing addition, subtraction, multiplication, division and brackets) to make it equal to 1000.
The third question is a stroke problem (the upper part is an example, the lower part is a topic), which requires drawing a path in the graph, passing through each vertex (Hamilton path, which is called Hamiltonian loop when it ends).
Note that a stroke in this question does not require passing through every edge (called Euler path at this time), because it does not meet the conditions of Euler path, and you can’t draw it if you want. If you don’t believe it, you can try.
The fourth question is a guessing game (similar to the character version of the game: Wordle). Combine the numbers on the left and the tips on the right of each line to get the final 3-digit answer.
In each line, according to the different situations of comparing the numbers on the left with the final answer numbers, yellow lights-some numbers are consistent but the positions of the numbers are not, green lights-some numbers are consistent with the corresponding positions, and-dash lines-no numbers are consistent. The number of lights means that several numbers match the corresponding situation.
The fifth question is the specific weight of both ends of the balance scale and the size of the number. Are you online? Fill in the greater than, equal to or less than sign at the question mark.
Question 6 is to fill in the numbers. Fill the numbers from the bottom 1 to 9 in the upper circle respectively, so that the sum of the numbers on each side of the triangle is equal.
Have you answered all six questions? Give it to people around you and try it.
reference data
https://www.idm314.org
https://www.idm314.org/about
https://www.idm314.org/2024-math-remix-challenge
https://www.idm314.org/#theme2024
https://www.idm314.org/decorate#posters
Openness, friendliness, pluralism, universality and modesty