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Jun 22nd, 2018
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  1. #include <math.h>
  2.  
  3. int binom(int n, int k)
  4. {
  5. if (k == 0 || k == n)
  6. return 1;
  7.  
  8. return binom(n-1, k-1) + binom(n-1, k);
  9. }
  10.  
  11. double calc(int M);
  12. {
  13. int n, k, M, num;
  14. while (n < M) {
  15. num = pow(3, n);
  16. n++;
  17. }
  18. return num / binom(n, k);
  19. }
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