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3.
2022 Polish Junior Math Olympiad First Round P3
2022 Polish Junior Math Olympiad First Round P3
Source:
May 21, 2023
number theory
Problem Statement
Let
n
≥
1
n\geq 1
n
≥
1
be an integer. Show that there exists an integer between
2
n
\sqrt{2n}
2
n
and
5
n
\sqrt{5n}
5
n
, exclusive.
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