1, 3, 6, 10, 15, 21, 28, 36, 45
1,3,6,10,15,21,28,36,45.
The differences between the two numbers are as follows
2、3、4、5、6、7、8、9……
RELATED INFORMATIONS
- 1. Calculation: 13 + 16 + 110 + 115 + 121 + 128 + 136 + 145=______ .
- 2. The rule of 0 1 3 6 10 15 21 28 36 (expressed by n),,,,, you prawns are bubbling ,,,,,, n denote
- 3. What are the rules of 3, 6, 10, 15 and 21?
- 4. Mathematical solution; write numbers according to the law; 0,1,3,5,8,21,55, (--, --, --, --,)
- 5. Observe the number of the following column, 1.3.6.10.15.21... According to this rule, what is its number in 2004
- 6. Observe the number in the following column, 1,3,6,10,15,21. According to this rule, its number 2004 is
- 7. Look at the numbers 1, 3, 6, 10, 15, 21, 28, 1 According to the law, what is the number from one to the hundredth? What is the number in 2009?
- 8. Please observe the law of the following numbers and fill in the appropriate numbers in brackets according to the law: 1,2,3,5,8,13,21, (), 55,89?
- 9. 1. 2; 3; 4; 5; 6; 7. N 1; 2; 3; 4; 5; 6; 7 ........n 0; 1; 3; 6; 10; 15; 21 ........( )
- 10. 1→3 2→6 3→10 4→15 5→21 … … The law of finding formula
- 11. What is the law of the calculation of 1 + 3 + 6 + 10 + 15 + 21 + 28?
- 12. -3 / 7,2 / 5, - 5 / 13,3 / 8, - 7 / 19,4 / 11 write the general formula
- 13. 5/7,5/13,17/63,13/63…… , find the law, find the general term formula
- 14. 1,3,6,10,15,21,…… Who can tell me the general formula? It can be described in words
- 15. The general formula of 0 1 3 6 10 15 21 28
- 16. Finding the general term formula of 6,10,15,21
- 17. The general formula: 2 / 1, 3 / 2, 5 / 3, 8 / 5, 13 / 8, 21 / 13
- 18. Find "2 / 1,3 / 2,5 / 3,8 / 5,13 / 8,21 / 13..." The general term formula of
- 19. 3,7,13,21,31
- 20. What is the general formula of 1,3,7,13,21 What is the general formula of 1,3,7,13,21,31