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a number is divisible by 9 if the sum of the digits is divisible by 9.

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Q: What are the divisibility rules for 9?

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The divisibility rules of 4 and 9 are combined to make the divisibility rule of 36.

3 and 9. And they divide into 123456789 whether or not you use divisibility rules!

The answer will depend on the divisibility rules list.

fractions help you write out divisibility rules because divisibility rules help with fractions . Glad I would help good bye

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Do the division, if there is no remainder, it is divisible. Seriously, many of the "divisibility rules" that have been discovered become more complicated than doing the actual division. For practical purposes, just learn the divisibility rules for a few simple cases (divisibility rules by 2, 4, 8, 5, 10, 3, 9, 7, 11, and 13), and for all other cases, just do the division.

The divisibility rules for a prime number is if it is ONLY divisible by 1, and itself.

If the last 3 digits are divisible by 8 and the sum of the digits are divisible by 9.

1 3 9 19 57 95 171 285 855

With the common divisibility rules, you can quickly see that it is divisible by 5, and by 9 (3 x 3). If you divide 225 by each of these numbers, you should be able to get the remaining factors quickly, as well.

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Jason Delaware

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