![](data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 72 71" width="72"></svg>)
A natural number divisible by 2 must be a composite number I am a student of Fengtai No.1 Primary School. A three digit number composed of three natural numbers must be a multiple of three. √ or ×
All wrong
There is one exception
2. ABC is divisible into 3 only when a + B + C = 3 6 9 12 15 18 21 24 27, for example 123 369
And 124 1 + 2 + 4 = 7 / 3 is not an integer, so 124 is not a multiple of 3
RELATED INFORMATIONS
- 1. With the smallest natural number, the smallest prime number and the smallest composite number, what are the three digit numbers that can be divided by 2, 3 and 5 at the same time? Write two
- 2. Use the smallest natural number, the smallest prime number and the smallest composite number to write the number divisible by 2, 3 and 5 at the same time
- 3. What is the smallest of the eight natural numbers with different divisors?
- 4. A natural number has 14 different divisors. What is the minimum number
- 5. There is a natural number with 8 different divisors, which is a multiple of 50. What is the minimum of this natural number?
- 6. There is a natural number whose single digit is zero. It has eight divisors. What is the minimum number?
- 7. What is the minimum natural number with 30 divisors
- 8. How many divisors does 432 have? What is the minimum natural number with these divisors? Please explain
- 9. For a natural number, the sum of the minimum two divisors is 3, and the sum of the maximum two divisors is 60?
- 10. The minimum natural number with 12 divisors is______ ．
- 11. The product of three continuous natural numbers must be divisible by the combined number () The product of three continuous natural numbers must be divisible by the combined number () The scope of this problem is multiplication and division of integers and factorization
- 12. Any non-zero natural number can be judged by at least one factor () and the total number can be divided by 2
- 13. A = 2 × 3 × m, B = 3 × 5 × m (M is a natural number and m ≠ 0). If the greatest common divisor of a and B is 21, the least common multiple of a and B is 1______ ．
- 14. If three points a (- 2, - 2) B (0, m) C (n, 0) (Mn is not equal to 0) are collinear, What is 1 / M + 1 / N?
- 15. (2013 · Zhangjiagang City simulation) it is known that Mn = C, CB = a, (a, B, C, D, m, n are all natural numbers), then the correct proportion in the following formula is () A. mn=baB. mn=abC. an=bmD. ma=bn
- 16. The product of three natural numbers is 180, and the sum of two natural numbers is equal to the third natural number I know the answer by enumeration What I want is the equation step 180 = 2 * 2 * 3 * 3 * 5 must be solved in this step? This is not enumeration
- 17. 180 times m equals 183 times n. m and N are two adjacent natural numbers. What are m and N?
- 18. 180 * m = 183 * n. It is known that m and N are two adjacent natural numbers (M > n). What are m and N?
- 19. The quotient of natural number a divided by natural number B is 18. The least common multiple of a and B is 18______ ．
- 20. The quotient of natural number a divided by natural number B is 5. The least common multiple of these two natural numbers is () A. aB. bC. 5