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.
In [8]:
num=0
for x in range(1000):
if not x%3 or not x%5:
num=num+x
print(num)
In [ ]:
# This cell will be used for grading, leave it at the end of the notebook.