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.
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#Ryan Perry
a=list(range(1001)) #makes a list from 0 to 1000
c=0 #c is the total
for b in a:
if b%3==0 or b%5==0: #adds numbers divisible by 3 or 5
c=c+b
print(c)
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# This cell will be used for grading, leave it at the end of the notebook.