Multiples of 3 and 5

Computer Science Level 2

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.

4 solutions

Hasmik Garyaka
Sep 17, 2017

sum([i for i in range(1000) if i%3==0 or i%5==0])

Anubhav Sharma
Mar 20, 2015

Here, is QBASIC Programming Code

CLS

S = 0

FOR A= 1 TO 999

IF A MOD 3 = 0 OR A MOD 5 = 0 THEN S = S + A

NEXT A

PRINT S

END

Nafees Zakir
Oct 3, 2014

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


>>> print n
>>> 233168

Ans = $\boxed{233168}$

Rajeev Sebastian
Jul 31, 2014

sum of multiples of 3 is added to sum of multiples of 5. Sum of multiples of 15 is subtracted from the previous sum