1+2-3+4+5-9+8+7-0+21
thirty-six
RELATED INFORMATIONS
- 1. Is 10001 a prime number? If not, by which numbers can it be divided?
- 2. Given the line 4x + 3Y + 6 = 0 and x = - 1, find the minimum of the sum of the distances between the moving point P on y ^ 2 = 4x and the two lines
- 3. A number is 1 / 9 of 32, 4 / 9 of this number is (), 21 times of the product of 3 / 7 and 2 / 3 is () A number is 1 / 9 of 32, 4 / 5 of this number is (), 21 times of the product of 3 / 7 and 2 / 3 is () Sorry, the wrong number just now.
- 4. If a two digit number is not divisible by (), then it must be prime Ask which teacher to help answer, the answer has been known, but I do not know why, for the analysis process. Thank you!
- 5. The ratio of the distance from the moving point P (x, y) to the vertex f (1,0) to the distance from it to the fixed line x = 4 is 1:2,
- 6. The sum of the two numbers is 250, where the quotient of the large number divided by the decimal is 21, and the remainder is 8
- 7. If the product of some prime numbers is ± 1, the resulting number cannot be divisible by these prime numbers Is there any proof? If the product of some prime numbers is ± 1, the resulting number cannot be divisible by any of these prime numbers.
- 8. Find the distance between two parallel lines l1:6x + 8y = 11 and l2:3x + 4y-15 = 0
- 9. How many combinations can 123456 be composed of six numbers, such as 65432?
- 10. How to prove that a positive integer n is prime if it cannot be divided by any integer between 2 and root n
- 11. Trajectories of points equidistant from two straight lines 3x + 4Y + 5 = 0,4x-3y-7 = 0
- 12. Can many netizens prove a mathematical proposition: an odd number greater than 9 is prime if it can't be divided by any one of 3, 5, 7, 9
- 13. 4 out of 16 × 7 = 7 out of 9 × 21 = 2 out of 5 △ 5 out of 2 = 1 out of 2 × 3 out of 1 × 5 out of 1 = 9 16 × 4 / 7 = 7 / 9 × 2 / 21 = 2 / 5 / 5 / 2 = 1 / 2 × 1 / 3 × 1 / 5 = 2 / 9 × 3 / 2 = 3 / 4 / 3 / 5 = 9 / 3 / 4 =
- 14. The distance from point (1, - 2) to line 4x-3y + 5 = 0 is
- 15. All prime numbers are not divisible by two______ .
- 16. 7+1+2=321 4+5-1=416 9+5-4=19 4+2+3=?
- 17. The distance from point C (1, - 2) to the line 4x + 3Y = 0
- 18. Are prime numbers only divisible by 1 and itself, and the rest of the numbers smaller than themselves can't be divisible? Isn't it? Doesn't it include numbers larger than him? For example, 13 can be divided by 130, but only numbers within 13?
- 19. How to calculate 666 + 987 * 654 / 987 * 655-321
- 20. How to find the linear equation with the distance of root sign 5 / 5 from the line 2x + y = 0?