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5
no numbers of the form 80...01 are squares
no numbers of the form 80...01 are squares
Source: Moldova JTST 2024 P5
June 10, 2024
number theory
Problem Statement
Prove that a number of the form
80
…
01
80\dots01
80
…
01
(there is at least 1 zero) can't be a perfect square.
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