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DIGITAL SQUARE NUMBERS.

(Money Puzzles)
Here are the nine digits so arranged that they form four square numbers:
9, 81, 324, 576. Now, can you put them all together so as to form a
single square number--(I) the smallest possible, and (II) the largest
possible?


Answer:

So far as I know, there are no published tables of square numbers that
go sufficiently high to be available for the purposes of this puzzle.
The lowest square number containing all the nine digits once, and once
only, is 139,854,276, the square of 11,826. The highest square number
under the same conditions is, 923,187,456, the square of 30,384.




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