Find the difference between the sum of the squares of the first n natural numbers and the square of the sum.

Find the smallest positive number that is evenly divisible by all of the numbers from 1 to n, where n is the provided parameter value number.

Find the largest palindrome made from the product of two n-digit numbers, where n is the provided parameter value number.

What is the largest prime factor of the provided parameter value number?

Return the sum of all even Fibonacci numbers that are less than or equal to the provided parameter value number.

Find the sum of all the multiples of 3 or 5 below the provided parameter value number.