code: def choose(n, c):
      return int(round(coremath.exp(logChoose(n, c))))
  
imports: import sys
  import math
  from nupic.bindings.math import GetNTAReal, GetNumpyDataType, SparseMatrix, SparseTensor, TensorIndex, Domain
  from nupic.bindings.math import lgamma, erf
label_desc: Use image node_id 1 for calling a global function with example usage: choose(n, c) and returns: int