Why is there no - 0 in the number?

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• 1. The sum of the two numbers is 792, and the bits of one addend are 0. If 0 is removed, it is exactly the same as the other addend. The two numbers are______ And______ ．
• 2. High level mathematics a = 0.9 How to prove that a can be equal to 1a = 0.910a = 9.99a = 9A = 1 before a = 0.9
• 3. A few divided by a few equals 0.55
• 4. +Love 8 Love 7 5 number = () learning = () love=（ ---------- Love 8 -Love --------- seventy-five
• 5. How to decide group distance and group number in Mathematics
• 6. Use math to describe love,
• 7. Speed, I would like to ask the great gods a number guessing question Six numbers among The first number is 4 and the third number is 6 And six numbers are not repeated, which is equivalent to choosing in 0 123 5789 That is 4_ 6 _ _ _ What are the possible combinations of numbers
• 8. What number does "0" belong to?
• 9. A number smaller than zero
• 10. How many times does the number 2 appear from 0 to 100?
• 11. Primary school mathematics calculation 48 good 111, 58 good 111 found what
• 12. (1) I am a two digit, the product of ten digit and one digit is 18, and the one digit is a multiple of ten digit. I am () (2) Intelligent robots perform tasks by clapping hands. Every time I clap hands twice, the robot lights up once, I clap hands three times, and the robot waves once. Then when the robot lights up and waves again, I clap hands () times
• 13. 1-127 randomly determine a number. When guessing, choose the middle number to guess. You will know whether it is larger or smaller than the target number, such as 48, then it is 64, 32, 48 How many times do you guess the right number randomly?
• 14. There is a four digit number. The sum of the two numbers on the left is equal to the sum of the two numbers on the right. The sum of the two numbers in the middle is three times the sum of the two numbers next to it. The sum of the three numbers on the right is nine times that of the one on the left. Can you guess what the four digits are?
• 15. Mathematics - guessing numbers There is a four digit number which satisfies the following conditions: 1. The sum of two times and two in one digit is less than half in ten digit; 2. The new four digit number is the same as the original four digit number by the simultaneous transposition of the number on the one digit and the number on the thousand digit, the number on the ten digit and the number on the hundred digit; 3. The sum of one digit and ten digit is 10 Find this four digit number
• 16. Find the value of X x+3/x+2-x+4/x+3=x+5/x+6-x+4/x+5 For the value of X, please write the operation procedure
• 17. How to express with logic function, when A1 is greater than or equal to 50, A1 = 50, when A1 is less than 50, return the original value
• 18. Let's go to the library
• 19. Find rules 4, - 16,36, - 64, (), - 144, () Observe the numbers above, study their laws, and add the corresponding numbers in brackets
• 20. Mathematical problems: Formula A banner, with a total length of 8 meters, is required to be pasted with 10 characters. The width of the font is 40 cm and the width of the head and tail is 80 cm. How to calculate the spacing of each character