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What is the general formula of 1,3,7,13,21 What is the general formula of 1,3,7,13,21,31
1*0+1
1*2+1
2*3+1
3*4+1
General term formula: (n-1) * n + 1
RELATED INFORMATIONS
- 1. 3,7,13,21,31
- 2. Find "2 / 1,3 / 2,5 / 3,8 / 5,13 / 8,21 / 13..." The general term formula of
- 3. The general formula: 2 / 1, 3 / 2, 5 / 3, 8 / 5, 13 / 8, 21 / 13
- 4. Finding the general term formula of 6,10,15,21
- 5. The general formula of 0 1 3 6 10 15 21 28
- 6. 1,3,6,10,15,21,…… Who can tell me the general formula? It can be described in words
- 7. 5/7,5/13,17/63,13/63…… , find the law, find the general term formula
- 8. -3 / 7,2 / 5, - 5 / 13,3 / 8, - 7 / 19,4 / 11 write the general formula
- 9. What is the law of the calculation of 1 + 3 + 6 + 10 + 15 + 21 + 28?
- 10. 1, 3, 6, 10, 15, 21, 28, 36, 45
- 11. What are the general formulas of 1,2,5,10,17,26 and 1,3,7,13,21?
- 12. 2 / 3, - 1,10 / 7, - 17 / 9,26 / 11?
- 13. 1,2,5,10,17 I know the answer!
- 14. Finding the general formula of 1,2,3,5,7,10,13,17,21 Find 1,3,5,10,16,24,37,53 Find 1,3,6,10,17,26,41,61 General term formula
- 15. Please add appropriate operation symbols to make the operation result 24. - 4,3,8,1
- 16. 8 4 3 = 24 add sign and bracket to form formula
- 17. 5 = {1 -- 10} add symbols between them to make the answers get 1,2,3,4,5,6,7,8,9,10! Move your head!
- 18. 1. Add operation symbol to make 3 = 24 The order cannot be reversed
- 19. How to make 2,7,8,11 into a formula by using operation symbols and adding brackets to make the result equal to 24?
- 20. How to calculate 24 o'clock from 3, 7, 1 and 8? I solved (7-3-1) * 8