human
Ways of dividing a group into two halves such that two elements are in different groups | This function will return the factorial of a given number.
This function will calculate nCr of given n and r.
This function will Calculate number of ways.
Driver code"
Solution in Python:
assistant
#Here is code to ways of dividing a group into two halves such that two elements are in different groups and the other steps required.
 def factorial ( n ) :
	result = 1
	for i in range ( 1 , n + 1 ) :
		result *= i
	return result
def nCr ( n , r ) :
	return ( factorial ( n ) // ( factorial ( r ) * factorial ( n - r ) ) )
def calculate_result ( n ) :
	result = 2 * nCr ( ( n - 2 ) , ( n // 2 - 1 ) )
	return result
if __name__ == " _ _ main _ _ " :
	a , b = 2 , 4
	print ( calculate_result ( 2 * a ) )
	print ( calculate_result ( 2 * b ) )