== project-euler.rb

Spoilers Warning! Ruby solutions to Project Euler problems (link:http://projecteuler.net).

For now, the list of solved problems is:

* Problem 1: Add all the natural numbers below one thousand that are multiples of 3 or 5.
* Problem 2: Find the sum of all the even-valued terms in the Fibonacci sequence which do not exceed four million.
* Problem 3: Find the largest prime factor of a composite number.
* Problem 4: Find the largest palindrome made from the product of two 3-digit numbers.
* Problem 5: What is the smallest number divisible by each of the numbers 1 to 20?
* Problem 6: What is the difference between the sum of the squares and the square of the sums? 
* Problem 7: Find the 10001st prime.
* Problem 8: Discover the largest product of five consecutive digits in the 1000-digit number.