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same number of 9's as there are repeating 9's: 9 9 9 4 4 same number of 0's as 9's in the square 0 0 0 a final 9 9

See the pattern?

same number of 9's as there are repeating 9's: 9 9 9 9 9 4 4 same number of 0's as 9's in the square 0 0 0 0 0 a final 9 9

Learn the pattern and it's easy!

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