1, each row has 10 numbers, and 10 rows (each column has 10 numbers and 10 columns).
2. The number on the right of two adjacent numbers in a row is larger than the number on the left 1.
3. The number below two adjacent numbers in the column is greater than the number above 10.
On the one hand, this arrangement will enable students to improve and consolidate the knowledge gained in digital recognition, on the other hand, it will cultivate students' ability of observation and expression, promote the development of students' thinking and enhance their interest in learning mathematics.
Extended data
Prime numbers are also called prime numbers. A natural number greater than 1 cannot be divisible by other natural numbers except 1 and itself, and is called a prime number; Otherwise it is called a composite number.
Prime numbers are used in cryptography. The so-called public key is to add a prime number to the information to be transmitted when encoding, and then transmit it to the receiver after encoding. If anyone receives this information without the key possessed by the receiver, the process of decryption (actually the process of finding prime numbers (decomposing prime factors)) will be too long, even making it meaningless to obtain information.
In the design of automobile gearbox gears, the number of teeth of two adjacent gears is designed as prime numbers, so as to increase the least common multiple of the number of encounters and meshing of two identical teeth in two gears, which can enhance durability and reduce failures.
The relationship between the biological growth cycle of pests and the use of pesticides has also been proved. Experiments show that it is the most reasonable to use pesticides many times: they are all used in the climax of pest reproduction, and it is difficult for pests to produce drug resistance.
Missiles and torpedoes that change irregularly in the form of prime numbers are difficult for the enemy to intercept.
The life cycle of most organisms is also prime (in years), which can minimize the chance of encountering natural enemies.
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