1,6,7,12,13,18,19, (), ()

24:25

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1. Help me to look at this problem, find the rule 1.6.7.12.13
2. Find the rule: 1,1,1.5,3, (), 22.5
3. Negative 1.5.22.57 () find the rule and fill in the next number nothing
4. Find the rules and fill in the numbers 4,7,13,22,34, (), ()
5. -2. - 8, - 18, - 32, - 50, find the rules Please be more specific, Please be more specific. What's the 20th number, how to list the formula, and what are the symbols of *, ^
6. 7. 8, 10, (), 22, 38
7. 5, 10, 17, 26, 37. What's the process of finding rules?
8. Finding rules in mathematics 2,5,10,17, (), 37 Not only the answer, but also the explanation
9. Who knows the law of this series: 1, 2, 3, 6, 12, 23, 44 1. 2, 3, 6, 12, 23, 44, x, 164 what is the law?
10. Find the law 1 2 6 12 23 44 () 164
11. 1、 Find the rules and fill in the numbers. 12,10,14,13,16,16, [], [], 20,22. What are the rules
12. , fill in 26 27 30 35 () () 1.6.7.12.13
13. How many numbers are there that are multiples of both 3 and 5 within 100
14. What is the multiple of a number? How to find the multiple of six? What are the characteristics of the multiple of a number? What are the characteristics of the multiple of 2, 3, 5, 5?
15. A number is not only a multiple of 3 but also a multiple of 6. What is the minimum number? Papers due on Monday
16. A number is not only a multiple of 3, but also a multiple of 5 and 7. The minimum number is ()
17. Observe the number table and fill in the "mouth" in the number table one 1 -1 1 -2 1 1 -3 3 -1 1 -4 6 -4 1 1-5 port-10 5-1 1-6 ports-20 15-6 1 Why? Why do you fill in this way?
18. What is the fifth number in line 10? What is the fifth number in line 200? one 2、3 4、5、6 7、8、9、10 11、12、13、14、15 ……
19. According to the following rule, form a number table with positive integers, then which row and number is 2008 in the table 1；2,3；4,5,6；7,8,9,10；………………
20. The five numbers are 24:00: 1, 13 7 13 8 29 2, 17 6 30 23 26 3, 14 29 3 6 19 4, 7 19 14 17 21 5, 19 21 23 15 11