Fill in the number according to the rule: 1, 3, 7, 15, 31______ ,______ .
31 × 2 + 1 = 63; 63 × 2 + 1 = 127; so the answer is: 63127
RELATED INFORMATIONS
- 1. Find the rule 3, 7, 15, 31, 63___ ,255
- 2. 0, 1, - 3, 7, - 15, 31. What is the 100th number
- 3. 77×13+255×999+510.
- 4. 77×13+255×999+510.
- 5. 77*13+225*999+510
- 6. 77×13+255×999+510.
- 7. 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
- 8. 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?
- 9. 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
- 10. My father is 28 years older than Xiao Liang. Seven years later, my father's age is just three times that of Xiao Liang. How old are my father and Xiao Liang after seven years?
- 11. 1 2 / 3 3 / 7 4 / 15 5 / 31
- 12. 1,3,7,15,31,63,127…… What is n
- 13. What should be in the brackets 0, - 1, 3, - 7, (), - 31, 63, - 127?
- 14. 1 3 7 15 31 63. How to express rules with letters
- 15. 1.2.7.15.31.63. What are the rules of this group of numbers Wrong, it's 1.3.7.15.31.63.
- 16. Find the rule: 1,3,7,15, (), 63127.1,1,2,3,5,8,13,21, (), ()
- 17. 1,3,7,15,31,63, (), () to find the law
- 18. 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
- 19. 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!
- 20. 15+20+25+30+35+40+45.+1000=?