When I heard the puzzler last Saturday, I immediately knew the number
was not a perfect square. Perfect squares cannot have 2 in the units
place. Nor 3, nor 7, nor 8. All you need to know is the square of the
integers 0-9.
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"Are you unaware that the true astronomer must be a person of great
wisdom?"
--
Plato, Epinomis
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Dr. George Spagna
Physics Department
Randolph-Macon College
P.O. Box 5005
Ashland, VA 23005-5505