Python compute

Question

compute sum of all intergers that are multiples of 9 from 1-250

Answer 1

print(3402)

Answer 2

# Sum of multiples of k lower from 1 to n
print(k*(n//k)*(n//k+1)//2)

Answer 3

print(sum([_ for _ in range(1, 251) if _ % 9 == 0]))

Answer 4

Looks good

https://code.sololearn.com/cowFK7URRXY6/?ref=app

Answer 5

sum = 0
for i in range(9,251,9):
sum += i

Answer 6

is 3402 the correct answer?