static int nCr ( int n , int r ) {
  return fact ( n ) / ( fact ( r ) * fact ( n - r ) ) ;
}

static int nCr ( int n , int r ) { return fact ( n ) / ( fact ( r ) * fact ( n - r ) ) ; }
(method_declaration (modifiers) type: (integral_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier)) (formal_parameter type: (integral_type) name: (identifier))) body: (block (return_statement (binary_expression left: (method_invocation name: (identifier) arguments: (argument_list (identifier))) right: (parenthesized_expression (binary_expression left: (method_invocation name: (identifier) arguments: (argument_list (identifier))) right: (method_invocation name: (identifier) arguments: (argument_list (binary_expression left: (identifier) right: (identifier))))))))))