Program:
n = int(input("Enter Positive Number : "))
sum = 0
sum= ((n*n)*(n+1)*(n+1))/4
print("The Sum of Series is",sum)
Output:
Enter Positive Number : 2
The Sum of Series is 9.0
Python program count the number of alphabets, lowercase letters, uppercase letters, digits and words
write a function that reads the contents of the String and counts the number of alphabets, lowercase letters, uppercase letters, digits and no of words. def count(str): alpha, uppercase, lowercase, di
def decitobin(n): if n > 1: decitobin(n // 2) print(n % 2,end='') num = int(input("Enter any decimal number: ")) decitobin(num) Output: Enter any decimal number: 42 > 101010>
The mathematical formula to find the sum of 1²+2²+3²+….+n² is n(n+1)(2n+1)/6 So to find the sum of series we use this formula. Program: n = int(input("Enter Positive Number : ")) sum = 0 sum= (n*(n+
