#If we list all the natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6 and 9. 
#The sum of these multiples is 23.
#Find the sum of all the multiples of 3 or 5 below 1000.

answer = 0

for i in range (1,1000);
  if i%3 = 0 or i%5 = 0;
    answer = answer + i
  else;
    continue
print answer

Create multiplesof3and5.py