Euler

Question Original post on ProjectEuler.net Each new term in the Fibonacci sequence is generated by adding the previous two terms. By starting with 1 and 2, the first 10 terms will be: 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, … By considering the terms in the Fibonacci sequence whose values do not exceed 4,000,000, find the sum of the even-valued terms. Solution This problem is meant to teach the reader how to think of a recursive problem in an iterative fashion....

Question Original post on ProjectEuler.net If we list all the natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6, 9. The sum of these multiples is 23. Find the sum of all the multiples of 3 or 5 below 1000. Solution This problem is essentially checking the exact same logic as Fizzbuzz, so I feel there isn’t much to be said about the fundamentals of the math and logic behind this....