The number is .
(Perfect square: )
The square root of any whole number that is a perfect square is rational.
The number is rational.
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(Perfect square: ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=ec1b7b6f684108f51c976780022c3388.png\")
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