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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n = 0
for i in range (0,1000):
if i %3 == 0 or i %5 ==0:
n += i
print (n)
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