CHOOSE _ _ _ _ _ _ _ _ _ _ _ _ operator

choose(<m>,<m>) returns the number of ways of choosing <m> objects from a collection of <n> distinct objects --- in other words the binomial coefficient. If <m> and <n> are not positive integers, or m >n, the expression is returned unchanged. than or equal to

examples:

choose(2,3); 

  3 


choose(3,2); 

  CHOOSE(3,2) 


choose(a,b); 

  CHOOSE(A,B)