# Demo entry 4722471

**Project Euler Problem 1**

Submitted by **anonymous**
on May 10, 2016 at 11:58

Language: Python. Code size: 584 Bytes.

# Find the sum of all the multiples of 3 or 5 below 1000. # 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. import numpy as np def MultiplesofThreeorFiveLessThan1000(): x = np.arange(1,1000) multiples = [] for num in x: if num % 3 == 0: multiples.append(num) elif num % 5 == 0: multiples.append(num) return(multiples) if __name__ == "__main__": x = MultiplesofThreeorFiveLessThan1000() print x, np.sum(x)

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