Answer:
They are each a consecutive multiple of 3 and the highest number is the sum of the two lower numbers.
The higher number is also a square product of the lower number/
Explanation:
3, 6. 9
3 = 3 x 1
6 = 3 x 2
9 = 3 x 3
and
3+ 6 = 9
3^2 = 9
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