3,5,9（ ）,33

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• 1. 3. What do you fill in brackets 5, 9, (), 33 and 65? What is the rule?
• 2. 1.2.3.5.8.13.21 find the number of the nth number, and use the algebraic expression containing n
• 3. 1,5,9,13,17,21 Expressed in algebraic form Before 16:40 today. Hurry up
• 4. The nth number of 1,5,9,13,17 is expressed by algebraic formula
• 5. In the algebraic formula: - 2x, Wu Fen a, B Fen a ten 1, 3 fen 1 (x ten y), n Fen 2 (m-2), 5 fen a ten B, there are () A.3 b.4 C.5 d.6 integers
• 6. 1.3.7.13.21.31 find the rule and express it with algebraic formula
• 7. There is a column of numbers 1 / 2, 4 / 17. Then the eighth number is -------
• 8. 4.2/4 and four fifths * 1.3 * 3.125 and six fifths / 2 and two fifths / eight fifths 3 * 29 and 27 / 26 + 2009 * [1 / 11 + 1 / 1998] - 1998 * [1 / 11 minus 1 / 2009] - 11 * [1 / 1998-1 / 2009]
• 9. Two fifths of a number is three less than one half of it. What's the number?
• 10. The sum of a and B is 800. Two fifths of B is 50 more than half of A. what is a and B
• 11. 1 / 3 3 / 5 7 / 9... 15 / 17. According to this rule, what is the nth number I just forced junior high school students
• 12. What's the rule? 1, 2, 5, 9, 17, 33 What's the rule? 1, 2, 5, 9, 17, 23.
• 13. There is a column of numbers: 1 / 2.. - 2 / 5.. 3 / 10.. - 4 / 17.. then the seventh number is
• 14. 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
• 15. 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?
• 16. There is a column of numbers: - 1 / 2,2 / 5, - 3 / 10,4 / 17. What is the seventh number
• 17. 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
• 18. Number of columns 13.1, 15.1, 17.1, 19.1 387.1, the average of this column is ()
• 19. 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
• 20. 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