multiple_of_3_or_5.py

'''
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.
'''

print("Sum: ", sum([k for k in range(1000) if k%3==0 or k%5==0]))