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National and Regional Contests
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Soros Olympiad in Mathematics
VII Soros Olympiad 2000 - 01
8.3
8.3
Part of
VII Soros Olympiad 2000 - 01
Problems
(1)
sum of no 1-500 not divisible by 5 or 7 (VII Soros Olympiad 2000-01 R1 8.3)
Source:
7/27/2021
Find the sum of all such natural numbers from
1
1
1
to
500
500
500
that are not divisible by
5
5
5
or
7
7
7
.
number theory
divisible
algebra