9 is the integer the proceeds 8 and preceeds 10 . The prime facorization is 3^2. A number is divisible by 9 if the sum of the digits is divisible by 9.
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This article is a stub. You can help Math Wiki by expanding it. |
9 is the integer the proceeds 8 and preceeds 10 . The prime facorization is 3^2. A number is divisible by 9 if the sum of the digits is divisible by 9.
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This article is a stub. You can help Math Wiki by expanding it. |