1 2 / 3 3 / 7 4 / 15 5 / 31
(n+1)/((2n+1)
RELATED INFORMATIONS
- 1. Fill in the number according to the rule: 1, 3, 7, 15, 31______ ,______ .
- 2. Find the rule 3, 7, 15, 31, 63___ ,255
- 3. 0, 1, - 3, 7, - 15, 31. What is the 100th number
- 4. 77×13+255×999+510.
- 5. 77×13+255×999+510.
- 6. 77*13+225*999+510
- 7. 77×13+255×999+510.
- 8. 77*13+255*999+510 =77*11+77*2+255*999+255*2 =77*11+154+255*1001 =77*11+154+255*(1000+1) =77*11+154+255*1000+255*1 =847+154+255000+255 =1256+255000=256256 Sorry, I can't understand this process, please explain
- 9. My father is 27 years old. Four years later, my father is four times as old as my son. How old is my father now?
- 10. My father is 33 years old and my son is 5 years old. A few years later, my father is three times as old as my son
- 11. 1,3,7,15,31,63,127…… What is n
- 12. What should be in the brackets 0, - 1, 3, - 7, (), - 31, 63, - 127?
- 13. 1 3 7 15 31 63. How to express rules with letters
- 14. 1.2.7.15.31.63. What are the rules of this group of numbers Wrong, it's 1.3.7.15.31.63.
- 15. Find the rule: 1,3,7,15, (), 63127.1,1,2,3,5,8,13,21, (), ()
- 16. 1,3,7,15,31,63, (), () to find the law
- 17. 15×15=?25×25=?35×35=? 15×15=〔1×(1+1)〕×100+25=225 25X25=〔2X(2+1)〕X100+25=625 35X35=〔3X(3+1)〕X100+25=1225
- 18. I have values of 0, 7.5, 10, 12.5, 15, 17.5, 20, 25, 27.5, 30, 32.5, 35, 40, 45, 50. I want to repeat the combination between them, and 1000 These combination elements can be up to 50, the minimum can be 1. Thank you!
- 19. 15+20+25+30+35+40+45.+1000=?
- 20. When 1 / 2 * (1000 / 435 + X / 1000) - 1 = 0.05/0.15/0.25/0.35, the values of X are respectively? Note: X is rounded