Define N3 as complete cubic number, delete all complete cubic numbers in positive integer sequence 1,2,3... To get a new sequence, then the 2008 item in the new sequence is
If the cube root of 2008 is about 12.6, then there are 12 complete cubes within 2008
So the number 2008 in the sequence is 2008 + 12 = 2020
RELATED INFORMATIONS
- 1. Delete all complete square numbers in positive integer sequence 1, 2, 3, etc., and get a new sequence. The 2005 term of the new sequence is?
- 2. Delete positive integer sequence 1, 2, 3 All the complete square numbers in, get a new sequence, the new sequence of 2003 is () A. 2048B. 2049C. 2050D. 2051
- 3. Let the curve y = ax ^ 3 + BX ^ 2 + CX + 2 have a minimum value of 0 at x = 1, and the point (0,2) is the inflection point of the curve,
- 4. It is known that for any x, there are (x + 4) = (x-1) a + (x + 3) = (BX + C) Try to determine a, B, C
- 5. Let f (x) = the third power of x minus the second power of x plus KX plus 4, K be a constant. It is known that f (x) ≡ (X-2) (the second power of AX + BX + C), a, B and C are constants a) Find a, B, C b) Someone thinks that all the roots of F (x) = 0 are real numbers,
- 6. It is known that the parabola y = ax of bungalow + BX + C (a > o) and the straight line y = K (x-1) - K bungalow / 4, no matter K is any real number, the parabola and the straight line have only one common number
- 7. If the equation AX = BC holds, then the following equation holds: a.abx = ABC b.x = BC c.b-ax = a-bc D.B + AX = B + BC
- 8. For rational numbers a, B, define the operation: a △ B = (3a + b) / (a-3b), find the value of 7 △ 6 Every step of the analysis! Quick, OK, I'll give it to him!
- 9. Let a and B be rational numbers, | A-3 | + | B + 7 | = 0. Find the value of (a + b) [- A - (- b)]
- 10. Given that a is a rational number and (a - √ 3) square = 7 + 4 √ 3, find the value of A fast
- 11. Let n be a complete square number and n be a cubic number, then the minimum positive value of n is zero
- 12. Three consecutive positive integers, the middle one is a complete square number, the product of such three consecutive positive integers is called "wonderful number". What is the greatest common divisor of all "wonderful numbers" less than 2008?
- 13. Find a minimum positive integer, which is multiplied by 2 is a complete square number, multiplied by 3 is a complete cubic number
- 14. In the isosceles triangle ABC, if angle a = 36 degrees, ab = AC, and the bisector BD of angle B intersects AC at point D, then CD: ad =?
- 15. In triangle ABC, if angle a = 36 degrees, ab = AC, BD bisector angle ABC, de parallel BC, then isosceles triangle has ()
- 16. The degree ratio of the top angle to the bottom angle of an isosceles triangle is 1:2. This triangle is a () angle triangle Please tell me why ()?
- 17. How much is 14 * 1 of 7 and 19, 5 * 1 of 8, 3 / 1 of 7 and 3 of 7?
- 18. If the x power of 2 is 3, log is based on 4, and 8 / 3 = y, then x + 2Y =? Ask the great God for help If x power of 2 = 3, log is based on 4, 8 / 3 = y, then x + 2Y =? Urgent!
- 19. There are also 2 square B-B cube a + 2A square B + AB square 2x + 14 square x-49
- 20. Square of M - cube of N + N-M