According to the rule of 1, 8, 27, 64,..., the sixth number should be (); according to the rule of 2, 5, 8, 11, 14,..., the number of 83 should be () The () th in this column

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• 1. Arrange 1, 2, 3, 4. Into the following matrix according to certain rules: 1 2 5 10. 4 3 6 11. 9 8 7 12 . 16 15 14 13. .... So, what's the number in row 3 (from top to bottom) and column 6 (from left to right)?
• 2. Observe the numbers in each column in the following order, fill in the following two numbers according to the rule, and write the 55th and 100th numbers. (1) - 2,4, - 6,8, - 10,12_____ ,_____ , 55th number (), 100th number () [2] 1, - 1,1, - 1,1, - 1 -, -. 55th number (), 100th number ()
• 3. Here is a regular array of triangles First line: 1 The second line 1 Third line: 1 2 1 The fourth line: 1 3 3 1 The fifth line: 1 4 6 4 1 The sixth line; 1 5 10 10 5 1 . What is the third number from the left of line 1997 Not only the answer, but also the method,
• 4. [-2,4,-8,16,-32,64.(1)] [0,6,-6,18,-30,66.(2)] [-1,2,-4,8,-16,32.(3)] What is the order of the first row and what is the number n What is the relationship between the second, third and first lines Take the tenth number of each row and calculate the sum of the three numbers [-2,4,-8,16,-32,64.........(1)] [0,6,-6,18,-30,66.........(2)] [-1,2,-4,8,-16,32..........(3)]
• 5. Gauge finding rate 0,6, - 6,18, - 30,66. What's the tenth one
• 6. Observe the number of columns given below: 0,6, - 6,18, - 30,66 Then the tenth number is_____________ ． Find the law of this group of numbers
• 7. Decompose 45 and 91 into prime factors
• 8. Decomposition quality factor 53 = 91 = 102=
• 9. 52 out of 91 decomposition quality factor
• 10. How to use 91 to decompose the quality factor
• 11. A group of numbers in regular order: 2,0,4,0,6,0, ·, in which the seventh number is (), and the nth number is ()
• 12. A problem of finding rules in junior high school mathematics 1,4, - 9,16,25, - 36,49,64, - 81. What is the nth number Notice that every three numbers have a minus sign,
• 13. 4,6,10,16,()()()
• 14. A question about finding laws in mathematics? When I are 1,2,3 and s are 5,3,1, what is the relationship between I and S?
• 15. Find the rules 1: Twenty five, (), thirty, (), forty five 2：（ ）,（ ）,（ ）,63,（ ）,（ ）,（ ）,89,（ ）
• 16. Find the law of mathematics 1 3 5 7 15 () ()
• 17. 1-3, - 2-5,3-35, - 4-63, the nth number is____________________ (find the rules)
• 18. 1 / 3, - 2 / 15, 3 / 35, - 4 / 63
• 19. -2, - 8,4, - 20,28, - 68... Find the rules,
• 20. Fill in the number 2 10 4 15 6 20 8 () thank you