How to prove that there are as many natural numbers as integers
Let a = {0,1,2,3,4,5,6,} B = {- 4, - 3, - 2, - 1,0,1,2,3,4,} now arrange B as: 0,1, - 1,2, - 2,2, - 2.3, - 3,4. - 4,. N, - n.. Now form corresponding F: 0 → 0,1 → 1
RELATED INFORMATIONS
- 1. 1,2,3,… Of the 98 natural numbers, the number that can be expressed as the square difference of two integers is___ .
- 2. Unit of natural number For example: the more units you can name, the better
- 3. Why is the unit of natural number 1
- 4. The basic unit of natural number is______ 903 was created by______ It consists of one
- 5. The basic unit of nonzero natural number is ()
- 6. 1 and 0 are the basic units of natural numbers
- 7. The basic unit of natural number is______ 903 was created by______ It consists of one
- 8. What is the minimum natural number and the number of natural numbers
- 9. The smallest natural number is______ There is no maximum natural number. The number of natural numbers is______ Yes
- 10. The minimum natural number is 0, there is no natural number of (), the number of natural numbers is () Our teacher mentioned it! I'll send you Office2010 if you get it right
- 11. After moving the decimal point of a number two places to the right, the number obtained is 19.8 larger than the original number. What is the number
- 12. Move the decimal point of 987.5 two places to the left, and it will be reduced to (), and 0.562 will be expanded 10 times to ()
- 13. Move the decimal point of a number two places to the left, the original number is (how)? Fill in (reduce by 1 / 100) or fill in (reduce by 100 times)?
- 14. Move the decimal point of 3.042 two places to the right, and then one place to the left. This number is larger than the original number ()
- 15. After a decimal point is expanded to 100 times of its value, the decimal point is moved to the left by two places, and then the number is expanded to 1000 times of its value. Finally, after the decimal point is moved to the left by one place, the decimal point becomes 18.72. What is the original number?
- 16. When a number is reduced by 1000 times and the decimal point is moved to the right by two digits, it is 5.17. This number was originally (), and its counting unit is (), It has () such units of account
- 17. There is a number reduced to one tenth of the original, and then the decimal point moved to the right two places, resulting in 3.05
- 18. If you move the decimal point to the left by two places, the decimal will be reduced to () (fill in a few parts); if you move it by three places, the decimal will be reduced to ()
- 19. First move the decimal point of a number to the left by three places. When it is enlarged by 100 times, the number will be reduced by 10 times, right?
- 20. All pure decimals are less than 1 ()