1: Multiples of 3 or 5#

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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Your Solution#

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def problem1(N):
    # Try your solution here
    return solution

# Testing:
unittest.main(argv=[''], verbosity=2,exit=False)

# Printing Project Euler Solution
# print(problem1(1_000))

My solution#

Spoiler Alert!!

See my solution bellow

def problem1(N):
    solution = 0
    for i in range(N):
        if i % 3 == 0 or i % 5 == 0:
            solution += i
    return solution

unittest.main(argv=[''], verbosity=2,exit=False)

The sum of all the multiples of 3 or 5 below 1000 is:

problem1(1_000)

233168