How to find the sum of all the multiples of 3 or 5 below 1000 in Python?

Question

Not sure if I should\'ve posted this on math.stackexchange instead, but it includes more programming so I posted it here.

The question seems really simple, but I\'ve

Answer 1

t = int(input())
for a in range(t):
n = int(input().strip())
sum=0
for i in range(0,n):
       if i%3==0 or i%5==0:
            sum=sum+i
print(sum)