Create easyChallenge4.txt

a) Find the sum of all multiples of 3 or 5 below 1000 (not inclusive).

b) Create a function, which takes two numbers. This function should return the sum of all multiples of 3 or 5 from the first number upto, but not inclusive, the second number.

c) Add a third parameter to the function you've created expecting an array of multiples, so funcName(1, 1000, [3,5]) returns the same result as a).