More Problems

• Implement a function to calculate the sum of the digits of a number until it is a single digit.
• Create a program to check if two numbers are amicable.
• Write a program to find the longest common subsequence between two strings.
• Implement a function to calculate the area of a rectangle.
• Create a program to find the sum of the first n odd numbers.
• Write a program to determine if a number is a triangular number.
• Implement a function to check if a number is a prime palindrome.
• Create a program to calculate the average of prime numbers in a list.