There is a column of numbers: - 1 / 2,2 / 5, - 3 / 10,4 / 17. What is the seventh number

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• 1. There is a column of numbers 1, 5, 9, 13, 17. What is the number 1000 in this column? What is the number 157 in this column?
• 2. There is a column of numbers, one: 9, two: 10, three: 12, four: 17, five: 27, six: 44, seven: 70, eight; 107, nine: 157, to find the tenth number
• 3. There is a column of numbers: 1 / 2.. - 2 / 5.. 3 / 10.. - 4 / 17.. then the seventh number is
• 4. What's the rule? 1, 2, 5, 9, 17, 33 What's the rule? 1, 2, 5, 9, 17, 23.
• 5. 1 / 3 3 / 5 7 / 9... 15 / 17. According to this rule, what is the nth number I just forced junior high school students
• 6. 3,5,9（ ）,33
• 7. 3. What do you fill in brackets 5, 9, (), 33 and 65? What is the rule?
• 8. 1.2.3.5.8.13.21 find the number of the nth number, and use the algebraic expression containing n
• 9. 1,5,9,13,17,21 Expressed in algebraic form Before 16:40 today. Hurry up
• 10. The nth number of 1,5,9,13,17 is expressed by algebraic formula
• 11. On the number axis, the number corresponding to point a is negative, and the number corresponding to point B is positive 17. Measure the distance between two points a and B
• 12. Number of columns 13.1, 15.1, 17.1, 19.1 387.1, the average of this column is ()
• 13. There is a question, when a = 19 / 17, B = -0.198 Find the fourth power of the algebraic formula 41a - the third power of 7a, the second power of B - the second power of 5A, the fourth power of B - the fourth power of 29a + the second power of 4A, the second power of B + the third power of 5A, the second power of B - the fourth power of 12a + the second power of B, the second power of a + the second power of 2B, the third power of A. Wang Meng points out that the condition a = 19 / 17 (17 / 19), B = -0.198 given in the title is redundant. Do you think his statement is reasonable, why? 2. It is known that the quadratic power of p-pq = 1 and the quadratic power of pq-3q = 2 Finding the quadratic power of P + 3pq-3q The first question is more troublesome, please take paper to help me calculate
• 14. There is a column of numbers 7, O, 2,5,3,7,0,2,5,3. What is the 19th number and the 28th number
• 15. What are the rules of 1,2,5,10,17,26 1, 2, 5, 10, 17, 26. What's the rule
• 16. There is a group of numbers: 1, 2, 5, 10, 17, 26,..., please observe the law of the composition of this group of numbers, and use the law you found to determine the eighth number as____ The nth number is ()
• 17. Observe the rules and fill in the blanks: 1 and 1 / 2, 2 and 1 / 4, 3 and 1 / 8 The nth number is（
• 18. One half, one sixth, one twelfth, one twentieth, one thirtieth The 60th number is ()
• 19. The number of columns arranged according to a certain rule is negative half, one sixth, one twelfth, one twentieth and one thirtieth According to this rule, the 99th number is ()
• 20. Look at the following column: half, one sixth, one twelfth, one twentieth And so on, what are the ninth and fourteenth numbers? Why?