More Problems

• Write a program to find the largest prime factor of a number.
• Implement a function to find the number of combinations of n items taken k at a time.
• Create a program to find the sum of all digits in a string.
• Write a program to determine if a number is a perfect number.
• Implement a function to check if a given year is a leap year.
• Create a program to find the product of all digits in a number.
• Write a program to check if two numbers are amicable.
• Implement a function to calculate the area of a circle given its diameter.