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Sum of all even numbers in range L and R | Function to return the sum of all natural numbers.
Function to return sum of even numbers in range L and R.
Driver Code"
How can the above be solved in Python?
assistant
#Here is code to sum of all even numbers in range L and R and the other steps required.
 def sumNatural ( n ) :
	sum = ( n * ( n + 1 ) )
	return int ( sum )
def sumEven ( l , r ) :
	return ( sumNatural ( int ( r / 2 ) ) - sumNatural ( int ( ( l - 1 ) / 2 ) ) )
l , r = 2 , 5
print ( " Sum ▁ of ▁ Natural ▁ numbers " , " from ▁ L ▁ to ▁ R ▁ is " , sumEven ( l , r ) )