More Problems

• Implement a function to compute the sum of all odd numbers below a given number.
• Create a program to determine if a number is a Narcissistic number.
• Write a program to check if two strings are permutations of each other.
• Implement a function to calculate the sum of digits of a factorial.
• Create a program to determine if a number is a valid ISBN.
• Write a program to calculate the sum of the first n squares.
• Implement a function to check if a number is a Catalan number.
• Create a program to calculate the area of an ellipse given its axes.