If M and N are natural numbers and M / 13 + n / 4 = 29 / 52, then M + n = ()

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• 1. M. N is a natural number, M / 1-N / 1 = 273 / 1, M: n = 7:13, what is the sum of M and N
• 2. M and N are two adjacent nonzero natural numbers whose greatest common factor is []
• 3. Given (6 * 10 ^ 8) * (5 * 10 ^ 2) * (3 * 10 ^ 3) = m * 10 ^ n (M is a natural number less than 10), find the value of M and n
• 4. M and N are both natural numbers. It is known that M multiplied by ten of n is less than m, and M multiplied by eight of N. the value of n is obtained
• 5. M. n are all natural numbers. If M divided by n equals 6, what is the greatest common factor of M. n
• 6. lim n-> inf Xn=n^2/(n+1)-[n^2/(n+1)] Such as the title Find the value of LIM n - > inf xn Xn = n^2/(n+1)-[n^2/(n+1)] Where the meaning of [] is rounding Inf means infinity
• 7. Let the probability density of the population X be: F (x, θ) = e to the power of [- (x - θ)], X ≥ θ; 0, X
• 8. If n is known to be an odd number, then (- x) n power + (- xn) power =?
• 9. Observe the following formulas: (x-1) (x + 1) = x2-1 & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; (x-1) (x2 + X + 1) = x3-1 (x-1) (X3 + x2 + X + 1) = x4-1 According to the previous law, we can get the following results: xn + 1 + xn + +x+1）=______ ．
• 10. (x to the third power) n + 2 = (XN-1 to the fourth power), find the value of (n to the third power) to the fourth power
• 11. It is known that m.n is a natural number (m ≠ n). What are m / 1 + n / = 1, m and N? It is known that m and N are natural numbers (m ≠ n). M / 1 + n / 2 = 1, what are m and N?
• 12. Given that m.n are all natural numbers and m (m-n) - n (n-m) is greater than 12, find the value of M.N
• 13. Define a kind of operation "*", for positive integer n satisfying the following operation properties: (1) 1 * 1 = 1, (2) (n + 1) * 1 = 3 (n * 1), then n * 1 is represented by an algebraic expression containing n______ ．
• 14. If a ⊕ B = n (n is a constant), then (a + 1) ⊕ B = n + 1, a ⊕ (B + 1) = n-2 When a ♁ B = n (n is a constant), we can get (a + 1) ♁ B = n + 1, a ♁ (B + 1) = n-2. Now we know that 1 ♁ 1 = 2, then 2008 ♁ 2008=____
• 15. There is an operation program, which can make a ⊕ B = n (n is a constant), get (a + 1) ⊕ B = n + 1, a ⊕ (B + 1) = n-2=______ ．
• 16. There is an operation program, can make a ⊕ B = n (n is a constant), get (a + 1) ⊕ B = n + 1, a ⊕ (B + 1) = n-2=______ ．
• 17. When a ♁ B = n (n is a constant), we can get (a + 1) ♁ B = n + 1, a ♁ (B + 1) = n + 2, then (a + 2) ♁ (B + 2)= (can you talk about the process? Thank you. Thank you very much. The sooner the better.)
• 18. There is an operation program, when a ⊕ B = n (n is a constant), define (a + 1) ⊕ B = n + 1, a ⊕ (B + 1) = n-2, now known 1 ⊕ 1 = 2, then 2010 ⊕ 2010=______ ．
• 19. Define an operation "*": for natural number n, it satisfies the following operation properties: (I) 1 * 1 = 1, (II) (n + 1) * 1 = n * 1 + 1, then n * 1 equals () A. nB. n+1C. n-1D. n2
• 20. Define an operation "*" for any non-zero natural number n, which satisfies the following operation properties: (1) 1 * 1 = 1; (2) (n + 1) * 1 = 3 (n * 1). Try to find the algebraic expression of n * 1 with respect to n