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Anonymous
1 x 81, 3 x 27, 9 x 9, 27 x 3, 81 x 1
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How about: 9 times 9 = 81 or 81 times 1 = 81
81 times 7 or 7 times 81 equals 567
81 x 58 = 4698
81/3 does.
It is a square number because 9 times 9 equals 81