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VII Soros Olympiad 2000 - 01
8.3
sum of no 1-500 not divisible by 5 or 7 (VII Soros Olympiad 2000-01 R1 8.3)
sum of no 1-500 not divisible by 5 or 7 (VII Soros Olympiad 2000-01 R1 8.3)
Source:
July 27, 2021
number theory
divisible
algebra
Problem Statement
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
.
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